There's a lot of talk about lean muscle compared to bulk muscle, but experts say it's not worth differentiating the two.

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

Fast twitch muscles help with sudden bursts of energy involved in activities like sprinting and jumping. Twitch muscles are skeletal muscles that help support your movement. They’re especially ...

What's the first thing that comes to mind when you think about the words twitch and muscle? Spasms, perhaps. You'd hardly be alone in thinking that. But when it comes to fitness, it's most commonly ...

There can get a point where you’re climbing mountains, navigating rough terrain, or carving fresh pow and feeling good —but ...

Your abdominal muscles surround your trunk between the rib cage and pelvis and keep your abdominal organs safe. Your core abdominal muscles also support your trunk and allow movements while keeping ...

Even modest amounts of strength training, even with lighter weights, can meaningfully preserve muscle and maintain your ...