Plus, exactly how to train to sculpt your muscles.

A hot tub or a sauna after a hard workout can be amazing. But is it as healthy as it feels? By Emma Yasinski After a hard workout, soaking in a hot tub or sitting in a steam room can be transcendent.

Try arm exercises to build muscle after 50, a daily plan designed by Jarrod Nobbe, MA, CSCS, using bands and bodyweight.

Learn how combining creatine and BCAAs can boost your workout energy, speed up muscle repair, and help you reach your fitness ...

Still dealing with a tight hip or weak glute—despite all the foam rolling, stretching, and strengthening? Or, maybe you’ve had an injury that keeps flaring up, even though you thought it was finally ...

Like all great villains, lactic acid has been misunderstood. We’ve been blaming it for the pain we suffer during intense exercise for more than two centuries. There’s nothing worse, we say, than the ...

Dr. Lippard agrees that the “use it or lose it” principle definitely applies to muscle strength. “A sedentary lifestyle ...

Lactic acid has long been vilified, but new research shows that it doesn't impair muscle function. In fact, it might actually be good for you. Like all great villains, lactic acid has been ...