The CrossFit method is to establish a hierarchy of effort and concern that builds as follows:
Diet: Lays the molecular foundations for fitness and health
Metabolic Conditioning: Builds capacity in each of three metabolic pathways, beginning with aerobic, then lactic acid, and then phosphocreatine pathways
Gymnastics: Establishes functional capacity for body control and range of motion.
Weightlifting and throwing: Develop ability to control external objects and produce power.
Sport: Applies fitness in competitive atmosphere with more randomized movements and skill mastery.
Reference: The CrossFit Training Guide, Greg Glassman, CrossFit Journal, 15 May 2010, p. 9