"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." High-intensity interval training (otherwise known as HIIT) may sound, well, intense. And it can be. But ...

New research uncovers how pairing intermittent fasting or low-calorie diets with high-intensity interval training can boost metabolism, burn fat, and enhance physical performance in postmenopausal ...

For many women over 40, hours of punishing workouts, endless cardio sessions, and strict calorie cuts often lead to little or no progress on the scale. In fact, this approach can leave the body more ...