CrossFit is a fitness regimen developed by Greg Glassman over several decades. Glassman, CrossFit's Founder and CEO, was the first person in history to define fitness in a meaningful, measurable way: increased work capacity across broad time and modal domains. He then created a program specifically designed to improve fitness and health. You can read more from the original article "What is Fitness" written in the CrossFit Journal HERE.
CrossFit is constantly varied functional movements performed at high intensity. All CrossFit workouts are based on functional movements, and these movements reflect the best aspects of gymnastics, weightlifting, running, rowing and more. These are the core movements of life. They move the largest loads the longest distances, so they are ideal for maximizing the amount of work done in the shortest time. Intensity is essential for results and is measurable as work divided by time—or power. The more work you do in less time, or the higher the power output, the more intense the effort. By employing a constantly varied approach to training, functional movements and intensity lead to dramatic gains in fitness.
The community that spontaneously arises when people do these workouts together is a key component of why CrossFit is so effective, and it gave birth to a global network of CrossFit affiliates that number over 13,000. Harnessing the natural camaraderie, competition and fun of sport or game yields an intensity that cannot be matched by other means.
The CrossFit program is driven by data. Using whiteboards as scoreboards, keeping accurate scores and records, running a clock, and precisely defining the rules and standards for performance, we not only motivate unprecedented output but derive both relative and absolute metrics at every workout. This data has important value well beyond motivation.
Overall, the aim of CrossFit is to forge a broad, general and inclusive fitness supported by measurable, observable and repeatable results. The program prepares trainees for any physical contingency—not only for the unknown but for the unknowable, too. Our specialty is not specializing.
While CrossFit challenges the world's fittest, the program is designed for universal scalability, making it the perfect application for any committed individual, regardless of experience. We scale load and intensity; we don’t change the program. The needs of Olympic athletes and our grandparents differ by degree, not kind.
What is Fitness?
What is fitness and who is fit?
In 1997, Outside Magazine crowned triathlete Mark Allen “the fittest man on Earth.” Let us just assume for a moment that this famous six-time winner of the IronMan Triathlon is the fittest of the fit. Then what title do we bestow on the decathlete Simon Poelman, who also possesses incredible endurance and stamina yet crushes Mr. Allen in any comparison that includes strength, power, speed and coordination?
Perhaps the definition of fitness does not include strength, speed, power and coordination, though that seems rather odd. Merriam Webster’s Collegiate Dictionary defines “fitness” and being “fit” as the ability to transmit genes and being healthy. No help there. Searching the Internet for a workable, reasonable definition of fitness yields disappointingly little. Worse yet, the National Strength and Conditioning Association (NSCA), the most respected publisher in exercise physiology, in its highly authoritative "Essentials of Strength Training and Conditioning," does not even attempt a definition.
For CrossFit, the specter of championing a fitness program without clearly defining what it is that the program delivers combines elements of fraud and farce. The vacuum of guiding authority has therefore necessitated that CrossFit provide its own definition of fitness. That is what this article is about: our “fitness.”
Our pondering, studying, debating about and finally defining fitness have played a formative role in CrossFit’s successes. The keys to understanding the methods and achievements of CrossFit are perfectly embedded in our view of fitness and basic exercise science.
It will come as no surprise to most of you that our view of fitness is a contrarian view. The general public both in opinion and in media holds endurance athletes as exemplars of fitness. We do not. Our incredulity on learning of Outside’s awarding a triathlete the title of “fittest man on Earth” becomes apparent in light of CrossFit’s models for assessing and defining fitness.
CrossFit makes use of three different standards or models for evaluating and guiding fitness. Collectively, these three standards define the CrossFit view of fitness. The first is based on the 10 general physical skills widely recognized by exercise physiologists. The second standard, or model, is based on the performance of athletic tasks, while the third is based on the energy systems that drive all human action.
Each model is critical to CrossFit, and each has distinct utility in evaluating an athlete’s overall fitness or a strength-and-conditioning regimen’s efficacy. Before explaining in detail how each of these three perspectives works, it warrants mention that we are not attempting to demonstrate our program’s legitimacy through scientific principles. We are but sharing the methods of a program whose legitimacy has been established through the testimony of athletes, soldiers, cops and others whose lives or livelihoods depend on fitness.