You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

A bionic knee that directly attaches to the thigh bone and uses implanted electrodes can make a prosthetic leg feel more like a part of the body, a new study finds. When you purchase through links on ...

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 ...

Some workouts leave you buzzing, muscles pumping, and energy on high. Others leave you wondering if you made any progress at all. The difference often comes down to more than just the weight on the ...

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 ...

This is a big deal. For years, many people believed that aging always causes muscle weakness. But this study shows that the nervous system—the system that sends signals from the brain to the ...

Protein stands as the cornerstone of muscle development, functioning as the primary nutrient responsible for repairing and building muscle tissue after physical activity. When you exercise, ...

It might be more than you think.

Our bodies are reshaped at puberty, mostly due to steroid hormones called androgens and estrogens. Testosterone is an androgen; estradiol is an estrogen. Androgens and estrogens are very similar ...

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 ...