Not all gym machines are created equal. In fact, some of them do more harm than good—including the hamstring curl machine. In many cases, machines lock your body into fixed positions that don’t ...

Squats train all the major muscles in your legs, including quads and hamstrings. Walking lunges challenge your leg muscles ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...

Stand with your feet directly underneath your hips and place your hands lightly behind your head with elbows wide. Slowly ...