The training stimulus turns on the signal for gene transcription. The specific type of training determines which genes will be copied and transcripted. Training for endurance by distance running builds aerobic enzymes and mitochondria through gene transcription that in turn improves the ability use oxygen to run long distances.

An unloading phase allows the body to adapt both physiologically and psychologically. This feeling of well being creates positive emotions toward competition. The volume and the intensity of training, or competition, have a direct impact on the speed of recovery and adaptation.

Studies show that following an intensive stimulus, the central nervous system suffers the most fatigue and that the nervous cell recovers 7 times more slowly that a skeletal muscle cell. An important point to remember when coming off an intense training cycle or a very competitive physical contest.