Along with fat-burning benefits of anaerobic interval training, more and more studies are showing that cardio training can help in keeping your heart healthy. A sound strategy for maintaining a healthy life is practicing the unique combination of both, anaerobic activity and aerobic activity (for shorter period of time). Cardio exercises are advised to not to be performed for longer duration as it tends to drain out the energy reserves and even the hormonal reserves. It ends up wearing out the body muscles too. Athletes and other sportsman suffer a lot of fatigued muscles due to over exercising and take time to recover from the wear and tear of the muscles if not taken proper precautions.