Here’s what happens to your body during a hot fitness class. By Emma Yasinski For some people, sweating through an intensely hot workout class can border on a spiritual experience. For others, a ...

Exercising in hot weather can have a different impact on your body than exercising at a comfortable or cooler temperature. It’s essential to be aware of the various physical effects, safety tips, and ...

With so much focus on the upper body and core, it's easy to forget to tone your back muscles. After all, you want to look ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Lifting heavy weights is not the only way to strengthen your muscles. And studies have shown that ...

A broad, well-defined back is a cornerstone of any well-rounded physique. But that’s not the only reason to pump up your posterior—it’s also a critical way of improving posture, reducing back pain, ...