By then he was 33 and enjoying a period of invincibility unparalleled in an endurance activity.

When the heart and lungs are primed to work efficiently through endurance activity, stamina levels are good.

Research suggests that individuals performing endurance activity require more protein intake than sedentary individuals so that muscles broken down during endurance workouts can be repaired.

Not unless you do it in addition to the fitness basics of resistance training and endurance activities such as running, cycling and swimming.

The muscles of athletes participating in endurance activities are normally packed with mitochondria, and thus even a slight loss means that a player would tire more quickly than usual.