A new wave of research is showing what the old gym myths about stretching got wrong—and what you really need to do to reap its benefits.

Chair exercises for leg strength after 65, 6 no-strain moves from certified trainer Michael Betts, with form cues and sets.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Sure, pressing heavy dumbbells over your head is downright badass. But if your shoulders creak like an ...

You stretch, you sweat, you push your limits — and finishing a workout feels great. But what happens next matters even more.