Lack of time is the number one reason people give for not exercising. Not getting results once they do start exercising is reason number two. Interval training is a great solution for both of these ...

Looking for a fountain of youth? You may need to search no further than your sneakers. Exercise, particularly high-intensity interval training, encourages your cells to make more proteins to feed ...

HIIT may offer the same health benefits as regular exercise in less time and help reduce body fat, heart rate, and blood pressure. It may even help improve blood sugar levels and insulin sensitivity.

Elizabeth Quinn, an exercise physiologist and fitness trainer, in her blog on sports medicine at about.com, reports that resting after exercise helps to repair tissues that were stressed during ...