Tree Limb Pull-Up

Strengthens upper back, biceps, and shoulders

Pull-ups are tough. But with a partner, even women with Olive Oyl arms can get the benefits of this great upper-body move.

Grasp a tree branch (or a monkey bar) with hands shoulder-width apart, palms facing you.

Bend your knees and cross your ankles, so you're hanging. Have your buddy grasp your shins just below your knees.

With your head back slightly, squeeze your shoulder blades down and back while bending your elbows to pull your chest toward the branch.

As you pull, have your buddy lift as much as necessary for you to accomplish the move. Hold for a second, then slowly lower.