For the Advanced CrossFit Program please visit the RAW Strength and Conditioning website.

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 ten general physical skills widely recognised 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 the CrossFit concept 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.

Check out more in The CrossFit Journal's take on 'What is Fitness?'

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