There are two primary categories of exercise: aerobic and anaerobic. Aerobic exercise is done rhythmically and continuously, such as running or swimming. Anaerobic exercise is done in short bursts, like weight lifting or sprinting.

Moderate aerobic exercise includes activities such as brisk walking, biking, swimming and mowing the lawn. Vigorous aerobic exercise includes activities such as running, swimming laps, heavy yardwork and aerobic dancing.