THE LEG CURL is one of the best machines—and best methods, period—for building hamstring strength and size. There are two types of hamstring curl machines, and you're likely to find one or the other ...

Today’s move is a donkey leg curl. This move will be working your glutes and hamstrings. Start by placing yourself on all fours on the floor. Square your body and tighten the core. Lift one leg and ...

Lie face down on a leg curl machine with your heels against the lower pad and the upper pad against your thighs. Bend at the knee to pull the pad up as far as possible then return to the start ...

Looking to seriously strengthen your hamstrings? Give sliding leg curls a go. Celebrity trainer Don Saladino, cofounder of NYC-based Drive495 gym—whose clients have included Blake Lively, Ryan ...