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 are a bunch of different reasons that serious endurance athletes generally don't have big pipes. The most obvious one is that they spend a lot of time running and pedaling and so on, and very ...

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

Ever wonder why some people seem to pack on muscle effortlessly while others spend months in the gym with little to show for it? Muscle growth isn't just about lifting weights -- it's a complex ...

While walking can help develop muscular endurance (a.k.a., your muscles’ ability to sustain exercise for long periods of time ...

Sprinting builds muscle mass and strength, can increase your speed, and help tone muscles. Long-distance running may improve your cardiovascular endurance and respiratory system. Which is best depends ...

Here, five workout mistakes that are holding you back from serious muscle growth—and some simple ways to get right back on track (It’s not just about what you’re doing at the gym, either—these other ...

There is scientific evidence to show the running promotes muscle growth. Research published in Exercise and Sport Sciences Reviews, for example, found that aerobic exercise can increase skeletal ...

This article was originally featured on The Conversation. Usain Bolt, the world’s fastest human, ran a 100-meter sprint at a speed of 23.35 miles per hour (37.57 kilometers per hour). That’s ...