Fast-twitch muscles are responsible for high-intensity work like heavy lifting and sprinting. Here's how to build them and keep them healthy.

These muscle-toning exercises target fast-twitch muscle fibers—which experts say are the key to building muscle fast, especially for women over 40.

“Muscle fibers are breaking down while we work out, so if we consume protein after a workout, it’s going to help stop that process,” says Hill. Build lean muscle.

Our dietitians and testers rounded up the 12 best protein powders. See the products that made our list and get tips on how to use protein powder.

Discover how a biceps rupture happens, what signs to look for, and the best ways to treat it through physical therapy, medication, or surgery.

Many people store fat in the belly, and losing fat from this area can be hard. Here are 18 effective tips to lose belly fat, based on studies.

Muscle twitching can occur in healthy people or those with neurological conditions. Find out the causes and how to treat and prevent muscle twitches.

Find all the latest on muscle at Medical Xpress. Your go-to source for news, research, and medical breakthroughs.

Retrovirally mediated overexpression of versican v3 by arterial smooth muscle cells induces tropoelastin synthesis and elastic fiber formation in vitro and in neointima after vascular injury.