Protein is the main component of all your body’s tissues, including your muscle tissue. Lifting weights causes damage to your muscles that breaks down the proteins; to combat this, your body makes new ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You've probably heard big guys at the gym tossing around the word "hypertrophy" when they talk about ...

Muscles do not grow in the gym – they grow when you rest. During deep sleep, your body releases growth hormone and fixes tiny ...

There is perhaps no better way to see the absolute pinnacle of human athletic abilities than by watching the Olympics. But at the Olympics – and at almost all professional sporting events – you rarely ...

Here’s something we don’t talk about enough: aging doesn’t shrink all your muscles evenly. Just like getting stronger isn’t a one-size-fits-all deal, neither is getting older. A recent review by ...

I’ve always been bookish. I spend most of my time in the lab rather than running, jumping or climbing. But I still have super strong muscles. They’re way bigger than when I was a young. I asked my ...

Exercise can have benefits at the level of neurons, through chemical and mechanical effects, researchers find. The discovery could inform exercise-related therapies for repairing damaged and ...

When you train your muscles (either by lifting weights, running, or doing resistance work), you create tiny microtears in your muscle fibers. While this might sound detrimental, it’s actually a good ...

Why some of us have sculpted, toned and visible muscles and some of us carry a little more flab depends on a lot of factors. Part of it is how and how much you work out, explains Todd Schroeder, ...