"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...

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 ...

Looking for the exercise equivalent of a magic bullet? That one perfect move that delivers maximum results in minimum time? While fitness infomercials have been promising such miracles for decades, ...

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 ...

Scientists have performed the most in-depth analysis of fast and slow twitch muscle fibers and the different ways they respond to exercise. Their novel approach uses large scale protein analysis of ...

Caroline Roberts writes articles and notifications for CNET. She studies English at Cal Poly, and loves philosophy, Karl the Fog and a strong cup of black coffee. Have you ever set out in earnest to ...

San Francisco 49ers star tight end George Kittle's offseason mornings usually involve working out, and like many professional athletes, an extra energy boost is needed. Fast Twitch is his go-to ...