"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 ...

MIT scientists find that motor neuron growth increased significantly over 5 days in response to biochemical (left) and mechanical (right) signals related to exercise. The green ball represents cluster ...

Rest assured, the hype is real. Hypertrophy is, by definition, the enlargement of an organ or tissue from the increase in size of its cells. Not to be confused with hyperplasia, the process of ...

Jonathan Schoeff, MD, a board-certified surgeon and longevity expert, breaks down a fitness truth in a recent Instagram post: ...

Achieving strong, defined arms or legs is about more than just lifting weights. A ton goes into growing your muscles—and that includes proper nutrition, recovery, and working out in a specific way.

Building muscle seems to be on everyone’s mind lately, as it should be. Packing on lean mass has benefits for your metabolism, blood sugar, daily functioning, and longevity, just to name some of the ...

More and more women are heading to the gym. Though not to lose weight, but to gain some serious muscle. Which is why having the best muscle-building tips is crucial. Unfortunately, there’s a lot of ...

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 ...

A recent review by researchers from Ball State looked at how different muscles respond to training in adults over 60. What they found should change how we think about exercise programming, whether you ...

We all want to know if and how we can come back to form after injury, illness, or a long hiatus. Muscles adapt in response to the environment: They grow when we put in the work and shrink when we stop ...