Endurance is the ability to maintain an exercise over an extended period of time. Continuous circuit training is a good example of endurance training. With circuit training you do a variety of exercises at a sustained pace in which you are training aerobically. Endurance weight training provides an excellent start off routine. It is also used to periodically rest the body from the rigors of power and strength routines.
Muscle fibers can vary between individuals.
They contract slower, thus fatiguing slower and respond and grow best when stressed through high repetitions, or aerobic activities. Fast twitch fibers make up the power muscles and are red. They contract 2 to 4 times faster then slow twitch, and also fatigue faster. They generate energy anaerobically. This muscle fibre responds best to high intensity such as heavy weight or interval training Body Types.