All three experts explain that one common habit that can speed up muscle loss is spending the majority of the day sitting or ...

There is perhaps no better way to see the absolute pinnacle of human athletic abilities than by watching the Olympics. But at the Olympics – and at almost all professional sporting events – you rarely ...

Using powerful new visualization technologies, researchers have captured the first 3-D images of the structure of a key muscle receptor, providing new insights on how muscles develop across the animal ...

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

New research has shown one type of muscle contraction is most effective at increasing muscle strength and muscle size -- and rather than lifting weights, the emphasis should be on lowering them. Good ...

Medically reviewed by Amy Kwan, PT Muscle fatigue is a decreased ability to create force with your muscles.Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue.Rest ...

At one point or another, we’ve all experienced the unexpected, intense pain of a muscle cramp. Muscle cramps, also known as muscle spasms or charley horses, are the involuntary contraction of muscle ...

If your fitness goal is to up the ante on endurance, pack more power into your sprint, or supercharge your strength gains in the gym, it’s worth exploring – what are the different muscle fiber types?

In a serendipitous discovery, UC San Diego researchers using cryo-EM technology captured the first visualizations of the 3-D structure of the muscle acetylcholine receptor in fetal and adult muscles.