When you take a muscle through the full range of motion, it goes through three phases of muscle contraction: eccentric, isometric, and concentric. Placing more attention on one phase can yield ...

Every sport has specialized training, specialized gear, specialized nutrition. Heck, every niche of every sport is specialized--the training an 800-meter runner does is worlds away from that of a ...

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 ...

Learn why pickle juice is the athletes drink of choice for cramps, how it works, and whether it could also relieve menstrual cramps.

While leg cramps are often benign and temporary, in some cases, they can indicate underlying health issues that require immediate medical assistance.

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.

Dehydration may be one cause of muscle cramps, and some evidence suggests that electrolyte imbalances also contribute to them. Muscle cramps are painful, involuntary contractions of the muscles that ...

Add Yahoo as a preferred source to see more of our stories on Google. Why is it harder to build muscle as you age? DjelicS/iStock via Getty Images There is perhaps no better way to see the absolute ...

8-minute bed routine to rebuild muscle after 65, from a certified personal trainer, using low-load strength moves and time ...