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

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 autoimmune disorder affects how well your nerves and muscles communicate, leading to a variety of symptoms. Myasthenia gravis (MG) is a chronic autoimmune condition that affects signaling between ...