HIIT workouts can boost your metabolic rate (helping you burn more calories throughout the day). And science backs up this ...

Sure, it takes time to see major payoffs from working out, whether you're looking to build muscle, lose weight, or improve your general health. But exercise does offer some forms of instant ...

Since you're well-read in the fitness department, you probably already know about the afterburn effect—i.e. how some workouts help you burn calories even after your sweat session is over. But what you ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Want an exercise program that helps you work out smarter, not harder? You've found it. The Women's ...