The Marine Corps exists to fight America's battles and make Marines. This means that everything we do as Marines is focused on our preparation for combat. For these reasons, the Marine is the ultimate warrior who must be prepared for uncertainty. Unlike the professional athlete, a Marine cannot afford to "peak;" rather, a Marine must maintain an optimal fitness level at all times. A Marine's training must combine strength, power, speed, and agility in order to enhance martial skills that can be applied at the optimal moment in a combat environment. Combat has no quarters, halftime or known...