Wednesday, March 19, 2014

Ab-Natomy 2

So nine months ago I posted a piece titled Ab-Natomy Volume 1 detailing our current obsession with abdominal training, a bunch anatomy stuff (the part you skipped over) and many of the common myths associated with said training.  If you missed part one you can find it here.  As I mentioned in the first addition of Ab-Natomy, I had originally planned on writing a single post addressing abdominal training.  However, as I went along, it became apparent that the intended content would be better addressed through two separate writings.  I came to this conclusion for a couple of reasons; firstly, it would allow me to avoid jumping around too much from concept to concept, inevitably watering down talking points and secondly, well, I was ready for a break from the computer screen.
 
As promised, Ab-Natomy 2 will seek to enlighten the readership on abdominal training specifically aimed at athletic performance.  Warning, the ideas expressed will require a degree of open-mindedness and an ability to think critically.  It’s certainly not rocket science, but a departure from how we traditionally view muscles and their roles in movement must take place.  I will do my best to provide examples that should ease this process.  So without further ado, let us move fourth into the world of Ab-Natomy Volume 2.
 
The first question that needs to be addressed if we are to develop a better understanding of how to train the abdominal region for athletics,  is what’s wrong with the prevailing abdominal training philosophy?  You know the one that includes extreme amounts of floor based crunching (flexion) and twisting (rotation).  Well, it’s predicated on an overly simplistic model of abdominal muscle function.  One in which only concentric muscular contraction is taken into any real consideration and focuses on the creation of movement almost exclusively.

Sorry, let me break that down.  Simplistic model, too much movement focus, and only one type of muscle contraction emphasized. 



Next question, how can things be done better?  To start, forget everything you've ever been taught about how to train your abs (what your high school football coach taught you, what you've read in Muscle and Fiction magazine, what you see every day at the gym, etc).  This next portion is going to require you to work from something of a clean slate.  Now let’s begin to apply some logic and examine how the abdominal musculature actually functions in the world of athletics.

Here is one of my favorite examples of how things really work.  Riddle me this, if I asked you to perform a 100% effort sprint and you didn't have abs, what would happen?  If you’re still scratching your head, do me a favor.  Stand up, press the tips of your fingers firmly into your upper abs (gold star for anyone who can recall the actual name of the muscle you are currently pressing against), pick up one foot so that you are standing on a single leg and relax your abs so that your stomach becomes relatively soft.  Once here, lean backwards and take note of what happens.
 
Congratulations, you've just exposed yourself to a brief glimpse of how the abs generally function during everyday activity.   What you should have noticed was a contraction taking place within your rectus abdominus as soon as your trunk started to deviate away from its center of gravity.  This particular contraction likely either halted the backward motion of the trunk entirely (isometric contraction), or created a significant slowing of the trunks backward momentum (eccentric contraction).  Now think about my earlier question again.  What would have happened to your torso during that ab-less sprint?  I’m not sure if being able to touch the back of your head to your heels is healthy. How’s that mental image treating you?


This particular example provides us with the ground work to begin understanding how the abdominal region works in athletics.  Our core musculature helps to absorb, transfer, stabilize, resist force and movement as we sprint, jump, cut, tackle, swing, throw, etc.  Much of this work takes place via isometric (contraction in the absence of any change in muscular length) and eccentric (contraction in the presence of muscle lengthening) muscular contraction as the body seeks a platform of pelvic and spinal stability from which the limbs can work.  The traditional abdominal training model misses the boat almost entirely with regards to training stability and resistance to movement.  It is imperative that we train the abdominals to be proficient in the likes of anti-extension (resistance to extension) and anti-rotation (resistance to rotation) to ensure that the core can maximize its ability to enhance systemic athletic performance.  Here are a few examples of the abdominals taking on the role of anti-extensors and anti-rotators in the real world:
What is keeping these two from folding backwards like pretzels?  A great deal of Anti-extension from their abdominal region, that's what.

Can't tell me his abs aren't playing a significant role here.  Anti-extension / Anti-rotation

This little girl's bike has some serious anti-extension strength
Anti-extension / Anti-rotation
Why your abs are sore after jump training (Anti-extension at its finest)
Same as above but with a view from the sagital plane
With all this in mind, that strange phenomenon of incredibly sore abs following a sprint or jump training sessions should be starting to make sense.  Furthermore, does doing hundreds of crunches still seem logical as a means to train your abdominal region for athletic greatness?  Before everyone goes and gets their undergarments in a twist, I’m not advocating for a complete removal of flexion based abdominal work; just a significant reduction in its volume to make way for a more well-rounded approach.


In order to properly condition the abs for athletics there are a few things that we must address within our programing.  First, training emphasis should shift from a trunk motion focus to one of trunk stabilization.  Second, exercises designed to train abdominal force transfer must be included and coached appropriately.  Third flexion based training volume should be reduced and progressed from simple isolation style exercises to larger movements requiring integrated muscle involvement; and finally, some form of dynamic pelvic and spinal stability training should be utilized.

Let’s take a moment to briefly break down each of the points above:

Shifting Focus from Movement to Stability
Traditional abdominal training places heavy emphasis on things like crunches, Russian twists, sit-ups etc.  While these motions likely have a place in a training regimen, the reality is that they probably shouldn’t make up the lion’s share of your abdominal work where athletic functionality is concerned.  Planking variations, roll-outs, push-up variations, suspension trainer flutters, Palof presses, cable push-pulls, single arm presses and others can help to develop a strong and stable abdominal region.

Moral of the story, trade these,


for theses.

Planking Variations (Anti-extension)


Stability Ball Roll-outs (Anti-extension)
Push-up Variations (Anti-extension)

Palof Press (Anti-rotation)

Cable Push-Pull (Anti-rotation)

Suspension Trainer Flutters (Anti-extension)

Single Arm Press (Anti-rotation)

Abdominal Force Transfer

When you really look hard at athletic movements, as stated earlier, the abdominal region does much more bracing to allow for force generated from the legs to transfer to the arms.  Yet with something like a baseball swing we consistently see trainers advocating movements that isolate the abdominals in a rotary pattern, creating trunk motion independent of the hips and lower body.  Take a look at the video and photo below.  Pay close attention to the synergy between the hips and the abdominal region.  What do you see?  Notice how the buttons on his shirt track in unison with his belt buckle almost perfectly the entire time.  Force for the swing is generated from the back leg, up through the hips, transferred across the abdominal region to the arms and finally through the bat.    


Why are we locking the hips down in the gym?  

Let the hips go son!
Tennis and hockey clips offer similar examples.


Are we starting to notice the trend?




Here’s a quick and easy assessment that anyone can do.  Which one looks more athletic?


or


Not a difficult choice, is it?

Exercises such as medicine ball throws, landmine rotational presses and band / cable rotations are all good options for teaching the body to effectively transfer force across the abdominal region, so long as the hips are cued to move naturally, a stable spine is maintained and the rotational component is occurring through the hips and not being driven through the lumbar spine.

Flexion Based Continuum

Flexion based abdominal training has taken some serious heat over the past few years as reports questioning its safety in regards to spinal health have surfaced.  More recently the question of how much emphasis we should be putting on these findings have emerged, as a large portion of the research was done in vitro and may have missed possible active stability mechanisms provided to the spine by living, fully functioning non-passive tissues.  Given the current information available, it would seem prudent to take precaution by limiting the volume of flexion based movements while maintaining some level of strength within the flexion pattern.  Because crunches and exercises similar in nature do a solid job of teaching an individual how to isolate and contract the abdominal region, they are not a bad place to start.  With that said I would prefer that they be used sparingly and integrated into more complex movements such as the Turkish Get-Ups and various forms of medicine ball slams once the trainee has obtained appropriate motor control over the abdominal musculature.  

The idea is to move from these

To these 

Turkish Get-Up


Medicine Ball Slam


Dynamic Core Stability Training

Because the abdominals don’t work in an isolated state on the field, court or ice, it’s important that they receive some stimulus within a dynamic environment during training.  This is probably easier done than one might think.  Including some maximal effort sprinting and jumping in your program can go a long way to address this need.  Additionally, unsupported overhead work, weighted carries (farmer’s walks & waiter’s carries) are a great inclusion into any core training program and are easily progressed and made more challenging by shifting from bilateral to unilateral variations.



Waiter's Carry (Unilateral)

Farmer's Walk (Bilateral)

Farmer's Walk (Unilateral)

Any dynamic overhead work (overhead walking lunges shown here)

In Closing:

The extent to which each of the above noted items should be emphasized within a given training regimen will vary based on factors such as individual strengths and weakness, given sporting code, training phase, etc.  Whatever the case may be, if you’re missing any one of the components you’re likely selling yourself short where abdominal development is concerned.  

So there you have it, a quick and dirty crash course on training the abdominal region for athletic excellence.  The key point to remember is that the abdominals role goes significantly further than simply flexing the trunk forward, their purpose is much more sophisticated than that.  The abdominals could very well be the body's equivalent to The Most Interesting Man in the World.


The Most Interesting Muscles in the World.
Who would have guessed endless crunches and leg-lifts would not be the answer?  If this is still confusing, please proceed back to the top of this article and re-read.  Repeat as needed.  Until next time, happy training.


Wednesday, February 12, 2014

A Peak Inside

Thought I'd share some of the goings on within the walls of Gain Line Performance
http://youtu.be/DD61kVkJSFI

Friday, February 7, 2014

Guess Who's Back


Guess who’s back, back again.  Gain Line’s back, tell your friends (sung in the whitest of white guy voices).  Well, the time has come to get back to business and start contributing to my blog again.  For those of you who don’t know, the reason behind my nine month hiatus and having to “get back to business” in the first place, is due to the fact that I finally took the leap and went into business.  Gain Line Performance is officially Gain Line Performance LLC!
Check it out yo!
 I’ll wait while the applause die down.  “Thank you, your support means a lot, thank you, thank you”.  “Thank you this is too much, really, thank you, I must, I must be moving on, thank you”.  Wow that was great, I never knew you all cared so much. 

In all seriousness, this has been a long time coming.   I’ve been harboring thoughts of opening my own place for years now.  The concept has certainly evolved a bit from its original form, but it has been there, ever present, none the less.  If I really think about it, this ambition (my wife would probably say obsession) to someday open my own facility was probably directly involved with why I’ve always found it extremely difficult to be happy, or maybe satisfied is a better word, with the majority of my previous positions within the fitness / sports training industry.   I mean “come on”, it couldn’t possibly have anything to do with the fact that one of my most endearing / enraging (those are synonyms, right?) traits is my uncanny ability to be an opinionated pain in the “you know what” where training is concerned, could it?  I mean that only lead to the occasional butting of heads.  Nah, couldn’t be.

Ultimately, at the end of the day, I simply couldn’t handle having to wade through considerable red tape any time a change was suggested or needed.  A new idea, red tape, want a new piece of equipment, red tape, a new program, red tape, a new place for corporate to stick it, wait what?  Yeah I said it, sue me. Long story short, I could no longer handle all the bureaucratic BS that comes along with working within the typical big box style gym. Yes the change from employee to owner/manager/employee/janitor/and a million other things, means a lot more work on my end.  However, I happily take on the burden of extra work in exchange for the ability to write what I want, program how I want, change things when I want, and buy cool new training items when I feel like it.



Over the better part of a decade now I have been slowly accumulating equipment and storing it away in my garage, basement and other various places around my house (and the houses of others on occasion, sorry) for when the time was right.   Turns out the time was right last summer, or at least I was feeling courageous enough to quit two of my three jobs at the time and dive into the process of making Gain Line Performance a reality.  Once the decision was made, the remainder of the summer was spent piecing together equipment I still needed and hunting for a home for the business.  Unfortunately I wasn’t born with a silver spoon so the budget was, well, small.  Money may not buy happiness, but it seems to be pretty important to anyone selling weight equipment (someone should inform them of how much happier they would be without my cash so that they may drastically reduce their prices). 

 
Lucky for me, free weights don’t need to be shiny and new to retain their effectiveness.  A 45lb plate is 45lb plate, a little rust just gives it character.  I scoured auctions, business closings, Craigslist, garage sales, and various other avenues in an effort to locate the best deals I could; come to think of it, the History Channel should have given me my own show, American Gym Auction Hunter Picker Star has a nice ring to it.  Anyhow, through a little extra work I was able to track down most of what I needed on the cheap and found a couple of small equipment manufacturers who did good work and offered affordable prices to purchase a few completely new items from. 


While my bargain shopping spree was taking place, I was simultaneously searching for a suitable building to house the business.  I was naive enough to think that this would be a relatively simple process.  I’m not sure I could have been farther off base with my thoughts.  My wife and I went out multiple weekends to look at various different properties around the Grand Rapids area that met the size and price requirements needed.  In most cases, we could only get one or the other, right size, wrong price or right price, wrong size, but we also ran into landlords who frankly didn’t seem very interested in unloading their listed properties, representatives of landlords who knew essentially nothing about the building or space they were supposed to be representing (is being aware of square footage numbers really too much to ask?) and in one case a city ban on gyms being located in commercial buildings.

About the time I was ready to just say screw it, I happened across an ad for a space for sale by owner, right size, right price and I was able to deal directly with the landlord (hallelujah!).  After a couple of visits and some contemplation, an offer was made and the rest is history.  I spent the rest of the summer, fall and into the winter moving equipment, cleaning, painting and setting up the gym.  Which brings us to today and me sitting at my desk writing this blog while looking out my window at the Alaskan or sorry, Michigan winter landscape.
 
 
So what is Gain Line Performance you ask?  Well, in its simplest terms, Gain Line Performance is a strength and conditioning / athletic development / fitness facility located on south end of Grand Rapids, MI.  Our main focus is helping athletes improve their on-field performance through off field training modalities (weight, plyometric, speed, agility, reaction, movement and mobility training).  If you’re not an athlete, but you have aspirations of becoming an overall more awesome human, enjoy the type of training environment on offer and aren’t afraid of hard work, we want you here too.  The end goal is to build not only a gym but a community of likeminded individuals helping one another achieve success. I know it sounds awesome right?  So why aren’t you a member yet? 



Beyond the general business themes, I’m also hoping to use Gain Line as a tool to help further develop the game of rugby in Grand Rapids / West Michigan / Michigan as whole.  Rugby has given me a lot over the years and I would like to help ensure that others are able to enjoy similar experiences, memories and friendships.  I’m still not exactly sure on all of the particulars of how I’m going to achieve this, but to start, Gain Line already serves as a potentially great avenue for rugby athletes and teams of all levels and aspirations to network, build relationships and recruit.  So basically what I am saying is that if you are a ruby athlete near Grand Rapids and you are not training here, you should be!  Get here!  Get it? Got it? Good!  

Looking to the future, I would also love Gain Line Performance to play a part in local rugby skill camps / clinics, high performance camps and a multitude of other things to help grow the game here.  I’m doing my best not to get too far ahead of myself, but I hope my excitement is infectious.
 

In closing I would like to pose a question.  What’s your Gain Line?  In the sport of rugby union, the gain line represents a hypothetical line beyond which the attacking team must progress to gain territory.  Once it has been achieved, the line is reset and the process of moving forward begins anew. 

The pursuit of enhanced athleticism / fitness should be approached much the same.  Once progress is realized, a new target must be sought to ensure the continuation of improvement.  So athlete or not, what’s your gain line?  Are you doing all you can to achieve it?



Sunday, May 12, 2013

Ab-Natomy Volume 1



Ab-Natomy Volume 1


Originally I had planned on this being a single blog post.  However, as I wrote it became apparent that there were really two primary topics under the same umbrella idea that I wanted to touch on.  In order to avoid watering down the content for the sake of brevity, I decided to break this post up into a two part series. Below you will find Ab-Natomy Volume 1 which will include an introduction into the topic at hand (the ever popular abdominal training), info on the anatomy of the abdominal region, and finally some thoughts regarding abdominal training mythology.  In Ab-Natomy Volume two, anatomical structure will be revisited (from a different point of view) and abdominal related training for athletic performance becomes the focus.  So without further ado, onward to Ab-Natomy Volume 1, enjoy.


Today’s topic up for discussion is another one of those issues which I feel has been addressed ad nauseam.  However, sometimes I forget that not everyone drowns themselves in training based journals, blogs, podcasts and videos to the same degree that I do.  So for the sake of the present readership, I’m going to go ahead and rehash a few important concepts regarding the ever popular topic of abdominal training. 



 

Ah the abs, the eighth wonder of the world; or at least one might believe this to be the case with so many obsessing over midsection development these days.  It has become just about impossible to go anywhere without being bombarded by some sort of information claiming enhanced abdominal definition.  Turn on the T.V. for 15 minutes or walk through a grocery store checkout line, not the self scan but the one that actually has a human being stationed at it and you will see what I mean.  No, that was not a typo.  I do mean “the one” hidden randomly in the middle of 75 unused lanes (anyone else find this weird?). Go ahead, try and find it.  It’s kind of fun and good exercise, sort of like a treasure hunt with a not so rewarding ending.


Once you’ve arrived, take a look at the publications amassed around the entrance.  I caution you, keep it brief or you may come away a few IQ points lighter.  Apparently congress has passed some sort of law requiring at least one abdominal related article to be highlighted on a magazine cover in order to have it printed.  Good on them to come to a consensus on something.

Ah.... and it all comes together

While not all the content included in these articles is bad (some publications, emphasis on some, have actually begun to use educated and credible sources to write these things), the packaging tends to create problems.  Look I get it; it’s all about marketing and the bottom line.  Obviously “How to Get The Washboard Look” is a more enticing title than “Understanding the Functionality of the Trunk Musculature”.   However, in a lot of ways the title dictates the content and when you water down the title, well…….. I hope you’re catching what I’m laying down.
 

Inevitably what you often end up with is an eye catching title, a brief blurb from the author (this is generally where the knowledge gems on functional anatomy, proper technique and progression are usually located if the editor hasn’t cut them away, so please don’t skip over the words) followed by a picture list of exercises.  Here is how these are generally read (I use this term loosely here): title, “yuck words who put these things in here”, look at pictures, rip out pictures, head to the gym.  By the way, is reading still a skill taught in school?  Present company excluded, I sometimes feel the vast majority of our society could gain a lot from re-acquainting themselves with this capacity.

In the end, what’s left is a mass horde of misinformed individuals blindly chasing six pack dreams via daily bouts of endless repetitions of still photo based exercises.  To make matters worse, these exercises are generally butchered due to the fact that stills minus their word description counterpart are inherently poor teachers of anything requiring technique.  Furthermore, because of the titling issue mentioned above, as well as the media’s constant pandering to the public’s already deeply seeded training misconceptions, training of the abdominal region has been relegated to an outdated, poorly executed and potentially dangerous isolation only based approach.


Now that you know how I really feel, let’s move forward and examine the structures that make up what the abdominals, core, cheese grader (whatever you would to refer to the area as) and shed light on some of the more prevalently held misconceptions floating around out there.


When most people talk abs, more often than not they are referring to the rectus abdominus (RA).  The RA originates on the pubic symphysis (down low in your “no-no region”) and inserts on the 5th – 7th rib cartilage and the sternum.  It is split length wise by the linea alba and is quartered width wise by tendinous insertions which provide the famous “six pack” shape. When contracted it flexes the spine and pulls either the ribs closer to the pelvis or the pelvis closer to the ribs depending on which area is stabilized (Authors Last Name, Every Anatomy Text Ever Written, 1BC – Present).  While this is certainly true, In Ab-Natomy Part Deux, you will learn why this may be somewhat short sighted.  I know you probably just peed a little with excitement; please take a moment to compose yourself. 
 

Based solely on the information I just presented, the RA is effectively trained through exercises such as the crunch, reverse crunch, sit-up, v-up, straight leg sit-up, hanging knee raise, etc. 




Moving beyond the RA, we also have the obliques.  The obliques are made up of two separate muscles and can be further categorized into a number of different fibers, but we will postpone any discussion into that degree of depth for some other time.  The obliquus externus (external oblique) originates on the lower portion of the lower eight ribs and inserts along the iliac crest (think hip bones).  Generally speaking the external oblique can flex, laterally flex, and rotate the torso.  Lying under the external oblique is obliquus internus (internal oblique).  The internal oblique originates from the lateral inguinal ligament and iliac crest and inserts on the pubic bone, along the linea alba and on the 7th – 9th ribs (this can become more complex when fascial lines are taken into account).  Again from a basic anatomy tells us that the internal oblique has the ability to flex, laterally flex, and rotate the torso.


With this general knowledge, training the obliques can be accomplished through exercises such as the crunch, reverse crunch, side crunch, standing side crunch, Russian twist, etc. 


 

Last but not least, we have the transversus abdominis (TVA).  The TVA originates on the undersurface of the lower six ribs, the iliac crest and the inguinal ligament and inserts on the pubic bone and along the linea alba.  The TVA has the ability to flex and rotate the trunk and also acts as something of a girdle to help support and flatten the abdominal wall. 
 

Training the TVA can be accomplished through any of the various torso flexing and bending exercise already listed above.




Now let me emphasize again that what I have just discussed represents a pretty general overview of the abdominal muscles by design.  There could be many more thoughts, ideas and details included, but that is not the intent of this particular piece of writing (plus it would be sleep inducing for most of you).  A basic understanding of the abdominals should suffice for what we will be discussing next, as well as lay some solid ground work for what is to be presented in Ab-Natomy 2.0. 
 

To round out Ab-Natomy the 1st, we now move on to examining a few of the more prominent abdominal training misconceptions.  Consider this a crash course in abdominal mythology 101. 


Myth # 1 - It’s possible to not have abs 

Here is something I have heard from a number of clients, “one of my goals is to have abs.”  I know what they are getting at here, but I always have to stop myself from laughing and saying, “great, we can check that one off the list right now, my job is done here”.  Let me let you in on a little secret, everyone has abs.  It’s part of your human anatomy.  Some people’s abs are just more visible than others (more on this to come), plain and simple.


Myth # 2 - Doing massive amounts of abdominal exercises is the best way to a six pack

True, training a muscle helps the fibers to grow therefore making the muscle more pronounced.  However, training is only one piece of the puzzle.  If said muscle is obscured by a layer of fatty tissue, additional training is going to do little make it more evident.  Mike Boyle, the strength coach for the Boston University Hockey team, put it well when he stated that the best exercise for developing abs was the table-push-away.  Getting rid of the fat sitting on top of the abdominals is the key to the washboard look, not some miracle producing exercise.  If you want great abs, start with your diet.




Myth # 3 – Abs should be trained everyday

First of all I don’t know why this would make any logical sense to anyone.  What makes the abs magically different than any other muscle in the body?  If we don’t promote this with anything else why do we do it here?  Secondly the abdominals are already receiving plenty of extra stimulation via other means.  Trust me on this one, your abs and spine will likely thank you (more on this topic in Ab-Natomy II). 

What happens when you train something every day......you start to look weird



Myth #4 – All abdominal exercise takes place lying down on a mat

I’m not really sure if this is a myth in the traditional sense, but from what I see at the gym I felt it ought to be touched upon.  Some basic physics concepts wipe this out rather quickly.  Same idea as to why standing pec flys make for a rather worthless exercise.  There are multitudes of ways to stress the core musculature in positions other than lying on the ground.  Many of which are likely to provide a more useful training adaptation.  See Ab-Natomy Dos for details.


Myth #5 – To progress an abdominal training program one should simply add more repetitions

The old more is better protocol.  This is the quintessential American way of doing just about everything.  Once again we see the abs receiving some sort of weird special training protocol that generally goes unused elsewhere.  In this case, it would make much more sense to train the abs as if we were training any other muscle group; by letting our goals dictate the programming.  For example, let’s say I was interested in developing my abs to stand out more (hypertrophy).  Most resources would say that I would be best served through programming which created an exercise intensity that held me somewhere around 6 to 12 repetitions or so.  This would obviously require weighting your traditional movements, something you generally don’t see much of in the land-o-ab training.  Let your training goals lead the way just as you would with any other muscle group and you will improve your likelihood of achieving said goals. 


To close out Ab-Natomy Volume 1, I would like to take a brief moment to highlight what we have learned here today:


  • This is the first part of a two part series (read part two for all your performance based ab training needs)
  • We as a society have an ab-normal obsession with abs (haha that joke was ab-solutely ab-surd)
  • Checkout lanes with human cashiers still exist
  • Although pictures are fun, if you possess the ability to read the words preceding them it would behoove you to do so.  Remember, those who don’t read are getting the same education as those who can’t read.
  • A bunch of anatomy stuff (that part in the middle)
  • We all have abs, I promise I’m not lying about this
  • Diet plays a massive role in making your abs visible
  • Your abs are not that special, they don’t need to be treated differently than every other muscle and showered with extra attention.  Do you really want your abs turning out like Lindsay Lohan? 
  • Much like there are multiple ways to skin a cat, or so I’ve been told (I’m not exactly sure who is performing this research but I’m positive PETA is all over it), there are multiple ways to enhance the function and visual appeal of your midsection beyond that of countless crunches and sit-ups.  Tune in for Ab-Natomy # 2 for details.
  • A bunch of different ways to refer to Ab-Natomy Volume 2

   To be continued…….