The back isn't just the largest muscle group in the upper body; it's also a real calorie-burning machine. The stronger and more active your back is, the more calories you'll burn throughout the day!

Bodybuilding star and former three-time Mr. Olympia Frank Zane broke down how to sculpt the arms with his one-arm dumbbell ...

When it comes to kettlebell workouts, many runners turn to the swing to help strengthen the glutes and add power to each step of a run. But that’s not the only kettlebell exercise that’s worthy of ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. You probably work your ...

You have 20 muscles in your forearm, the part of your arm between your elbow and your hand. They help you move your arms, hands, and fingers and perform many of the tasks of daily life. You can strain ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." NO ARM DAY WORKOUT is complete without a solid biceps pump. The big arm muscles are one of the most ...

The muscles worked by push-ups include the chest, shoulders, back, core, and arm muscles. This exercise is a great addition to any workout. There are several ways to modify or amplify your push-ups.

Arm fat can be particularly frustrating. It’s often one of the last areas to respond to diet and exercise, and the first place to show when we gain weight. Whether you’re concerned about upper arm ...

There’s a robust molecular language being spoken between your muscles and your brain. We’ve often thought about muscle as a thing that exists separately from intellect—and perhaps that is even ...

Almost everyone shrinks with old age. Many older adults have more difficulty gaining muscle than they did in their childhood and teenage years. And when it comes to maintaining that muscle, the phrase ...

If the goal of your workout is to walk away with a chiseled six-pack, you’re missing the point. Credit...Gritchelle Fallesgon for The New York Times Supported by By Jenny Marder To perform well at ...