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 ...

THERE'S MORE TO achieving the perfect biceps pump than just knocking out rep after rep of unfocused dumbbell curls. Even for the most experienced arm-day adherents, finding that sweet spot for the ...

If you want big biceps and arms, do curls. If you want bigger biceps and arms, do different kinds of curls. Variations as simple as a change in wrist position or source of resistance allow you to ...