"Army Strong" is more than just a tagline — for soldiers, it’s a requirement for duty. The U.S. Army requires that all active-duty soldiers prove their physical ...

Strength training is an important part of any well-rounded fitness regimen for a number of reasons, not the least of which is that the more muscle mass you have, the more calories you burn at rest.

See why a 90 second plank is an elite core benchmark after 50 and use this 4 move plan to safely build strength to reach it.

Take this simple squat test to see if your lower-body strength after 50 is below average, solid, or truly elite.

When I’ve finished a long run, my leg muscles feel like they’re ablaze. By the last few seconds of planking, my abs feel like they’re burning and close to shaking. When the workout burn is real, it's ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When I’ve finished a long run, my leg muscles feel like they’re ablaze. By the last few seconds of ...