Would an athletes ATP increase or decrease? Why?

ATP is a coenzyme that enables our cells to perform a spectrum of functions, and is the main source of energy that allows the body to generate movement.

ATP and athletic performance, then, are closely related. ATP provides energy your body needs for muscle contractions, blood circulation and cardiac function, and generally fuels the body for whatever function it may be performing. The harder, longer, and more intense the workout, the more ATP that is used. When an athlete repeatedly dips into their ATP source day after day, week after week, there must be replenishment or else they begin to run that energy source dry. This can obviously cause a loss in athletic performance - the athlete would not be able to operate at prime capacity if the ‘engine’ doesn’t have fuel.