Repeated exercise, or wasting, can change the way key genes work.

Creatine is a natural source of energy that helps your skeletal muscles flex (contract). It helps create a steady supply of ...

While some organs, like the brain, work continuously, other body tissues, like muscle and fat, can enter an inactive state.

Building muscle isn’t as simple as just lifting heavy things and hoping for the best. Gaining muscle is not so much about what you do, but rather how you do it. The same exercise could be used to ...

The misconception that muscle can be lean or bulky lies in its appearance. “When people (say ‘lean’), they’re usually ...

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 ...

“For weight loss, working out three to four times per week is optimal,” explains trainer Kehinde Anjorin, NCSF, CFSC, founder ...

The more we move, the more our muscle cells begin to make a memory of that exercise. MIT Technology Review Explains: Let our writers untangle the complex, messy world of technology to help you ...

How long does it take to build muscle is not, of course, a question with a simple answer, despite what the TikToks or Reels promising to unlock the one thing you need to get big might suggest. In fact ...

A hard workout can come back to haunt you. When you wake up the next morning and try to get out of bed, everyday motions like rolling over and standing up can make your muscles whine in pain. You ...