I started looking into CrossFit after seeing it mentioned by various health/fitness guys I’ve learned a lot from — like Richard Nickoley, Mark Sisson, and Art De Vany, who talk about the value of mixing things up, using high intensity, intervals, resistance training and such. I liked what I was finding in the methodology and was intrigued at its potential, so I was eager for an opportunity to try CrossFit in a way that includes the coaching I knew I would need to not hurt my middle-aged self. (Sure, it’s free if you do it at home, but who goes out on their own and just starts doing Olympic-style lifts? Not me!) Happily, a couple of months ago Tammy and I noticed that a CrossFit gym was about to open near our house. We checked it out and took the plunge! So far, it’s been very cool.

Before giving reports from the front and breaking out the obligatory pictures of progress, let’s start with a little about what CrossFit is. The headquarters site says

CrossFit is the principal strength and conditioning program for many police academies and tactical operations teams, military special operations units, champion martial artists, and hundreds of other elite and professional athletes worldwide.

Our program delivers a fitness that is, by design, broad, general, and inclusive. Our specialty is not specializing. Combat, survival, many sports, and life reward this kind of fitness and, on average, punish the specialist.

And in a CrossFit Foundations article, creator Greg Glassman writes, “CrossFit is a core strength and conditioning program. We have designed our program to elicit as broad an adaptational response as possible. CrossFit is not a specialized fitness program but a deliberate attempt to optimize physical competence in each of ten recognized fitness domains. They are Cardiovascular and Respiratory endurance, Stamina, Strength, Flexibility, Power, Speed, Coordination, Agility, Balance, and Accuracy.”

Of course, I’m not a Navy SEAL, a stick-fighting champion, or a fireman — but developing serious competence in all of these domains, and therefore a powerful “ready state,” would be awfully useful for the sorts of play I like to engage in: mountain biking, summit-scrambling, snowboarding, maybe a spontaneous half-marathon hill run or whatever else Tammy or my friends might want to draw me into. And it would come in handy for those (hopefully vanishingly) rare times when Stuff Happens — plus as I age, maintaining as much physical capacity as possible would be invaluable for health and autonomy.

There’s a lot of empirical observation and some pretty good epistemology behind various aspects that I can go into later, but today I’ll just share the central CrossFit prescription for efficiently achieving that broad, general, and inclusive fitness: constantly varied functional movement performed at high intensity. Every element of that is essential. Glassman breaks it down in a brief article on Understanding CrossFit:

Functional movements are universal motor recruitment patterns; they are performed in a wave of contraction from core to extremity; and they are compound movements — i.e., they are multi-joint. They are natural, effective, and efficient locomotors of body and external objects. [Author's note: Examples include squats, pullups, situps, jumping, running, throwing, lifts like deadlift and clean & jerk and overhead press. They are elemental movements, used in lots of activities.] But no aspect of functional movements is more important than their capacity to move large loads over long distances, and to do so quickly. Collectively, these three attributes (load, distance, and speed) uniquely qualify functional movements for the production of high power. Intensity is defined exactly as power, and intensity is the independent variable most commonly associated with maximizing favorable adaptation to exercise.

Recognizing that the breadth and depth of a program’s stimulus will determine the breadth and depth of the adaptation it elicits, our prescription of functionality and intensity is constantly varied. We believe that preparation for random physical challenges — i.e., unknown and unknowable events — is at odds with fixed, predictable, and routine regimens. [emphasis and paragraph break mine]

Plateauing is not easy when the adaptational response never has a fixed target — plus, the novelty of not knowing what will be coming next keeps us from getting bored. As sick as it might sound, it actually becomes a fun adventure to show up at the gym not knowing what challenge we’ll be hit with! One day it’s a 5k run or row for time; another day it’s finding the maximum weights you can deadlift, press, and back-squat; on another it is a butt-kicking, lung-searing sequence of a dozen varied exercises done for time (here’s one we were given a week or two ago, as demonstrated by a bunch of uber-fit trainers at a certification: [wmv][mov]).