Plus, exactly how to train to sculpt your muscles.

Scientists at Duke-NUS Medical School have uncovered how exercise helps aging muscles regain their ability to repair ...

What Is the Psoas Muscle? The psoas (pronounced so-ezz) muscles are two large muscles in your lower back. You have one on either side of your spine. They're the main muscular connection between your ...

Icing muscles after strenuous exercise is not just ineffective, it could be counterproductive, a new study in mice suggests. Credit...Melody Melamed for The New York Times Supported by By Gretchen ...

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.

Having a variety of gym equipment at your disposal is not always a guarantee. Life gets in the way, and when you can't make it to the gym, you might be left with those dumbbells gathering dust in your ...

These deep core exercises will target the most important, but often neglected, part of your midsection to reduce back pain and improve posture. Instead, learn which muscles make up the deep core and ...

Leg day is a staple in any well-rounded workout routine. And while many people make it a priority for a peachier backside or toned calves, strong legs are essential for reasons beyond aesthetics. In ...

Strength training is key to staying healthy as people age, with experts recommending working major muscle groups at least two days per week. Marfred Suazo, a fitness professional known as Fonz the ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.