What is CrossFit?
CrossFit is the principal strength and conditioning program for many division 1 sports programs, military units, police academies and Olympic athletes. The methodology is built around constantly varied functional movements done at high intensity, and combines cardiovascular activities, weightlifting, and gymnastics in as many ways as possible. While CrossFit serves many elite training programs, it is designed for universal scalability and is ideal for everyone from grandmothers to professional athletes.
We define fitness as increased work capacity across broad time and modal domains. Capacity is the ability to do real work, which is measurable using the basic terms of physics (force, distance, and time). Life is unpredictable (much more so than sport) so real world fitness must be broad and not specialized, both in terms of duration and type of effort (time and modal domains).

The magic is in the movements. All of CrossFit’s workouts are based on functional movements. These are the core movements of life, found everywhere, and built naturally into our DNA. They move the largest loads the longest distances so they are ideal for maximizing the amount of work done in the shortest time (intensity).
By employing a constantly varied approach to training, these functional movements at maximum intensity (relative to the physical and psychological tolerances of the participant), lead to dramatic gains in fitness. Intensity is essential for results and is measurable as work/time. The more work you do in less time, the more intense the effort.