"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you’ve ever been posted up at the squat rack, wondering how heavy you can lift, there’s a simple way ...

If you're someone who loves tracking your progress at the gym or just wants to understand how your body works when lifting weights, the 1RM is a concept you'll want to know! Don't worry if it sounds ...

Science has shown that low-rep, high-weight work—like in 5/3/1—builds the most strength, he says. But higher-rep work allows ...