Sagot :
Answer:
Interval training alternates short, high intensity bursts of activity with periods of rest and recovery in between. Interval training uses the body's two energy-producing systems: the aerobic and the anaerobic.
Answer:
Interval training alternates short, high intensity bursts of activity with periods of rest and recovery in between. Interval training uses the body's two energy-producing systems: the aerobic and the anaerobic.