"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." YOU WANT (AND need, for so many reasons!) to build more muscle. But you’ve hit the gym and piled up reps ...

YOU WANT (AND need, for so many reasons!) to build more muscle. But you’ve hit the gym and piled up reps and sets of everything from biceps curls to pushups and burpees, and you still don’t have the ...

Add Yahoo as a preferred source to see more of our stories on Google. And no—that enlargement isn’t just a product of improved confidence; it’s a physiological phenomenon called transient hypertrophy.

The term hypertrophy, like NEAT exercise and compound exercises, is one of those fitness phrases that often confuses more than it illuminates. Loved by exercise professionals, hypertrophy training isn ...