This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Despite what many workout equipment ...

Creatine is a safe and effective supplement for healthy adults to support muscle growth, exercise performance, and recovery. No current evidence suggests that it directly causes weight or fat loss.

Social media’s obsession with hyper-muscularity is pushing teenage boys toward a disorder often mistaken for simple discipline by parents and peers. Study of 27.8M Americans may have revealed direct ...

Neuromuscular disorders affect nerves that control voluntary muscles, including those in your arms, legs, and face. Nerve damage can lead to muscle weakness and loss of control. Examples of ...

Studies on the neurons of mice suggest our own human endurance may have more to do with the brain than our physique. Regular exercise strengthens muscles and improves endurance—but new research ...