http://www.youtube.com/watch?v=gIJom2pO5gk

What is CrossFit
CrossFit is constantly varied, high-intensity functional movements.

CrossFit training mixes various workout elements (weightlifting, gymnastics, monostructural, etc.) in as many combinations as creativity will allow. Routine is an enemy. Workouts are short and intense. A major element of CrossFit is coached group training with the competition and camaraderie that this environment creates. CrossFit founder Gregg Glassman describes this factor very effectively. “In implementation CrossFit is quite simply a sport—the sport of fitness. We’ve learned that harnessing the natural camaraderie, competition and fun of sport yields an intensity that cannot be matched by other means”

Furthermore, CrossFit is a core strength and conditioning program designed to elicit as broad an adaptational response as possible. CrossFit is not designed to maximize one area of specialized training but to optimize physical competence in all recognized fitness domains. Jim Crawley and Bruce Evans of Dynamax have categorized and defined the general skills that must be developed to achieve optimum physical competence.