After many years of research and physiological studies, exercise scientist have shown that aerobics are one of the most efficient ways to improve the heart, lungs, and circulatory system and to burn up body fat.
Aerobic training is any mild (low stress) exercise that is performed nonstop for at least 12 minutes and up to as much as 20-30 minutes per session and on at least three alternate days per week (and in some cases five or six times per week).