Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Meet the expert: Michael Hamlin, CSCS, is a strength and conditioning specialist and the founder of ...

After months (maybe years) of performing three sets of 12 reps on repeat, your muscles are likely craving a fresh—and heavier—training routine. One path forward: the 5x5 workout plan. The ...