If you're looking to tone your legs, do 2 sets of this move 2 to 3 times a week. It'll tighten, define, and shape the inner thighs.

You'll need: A step platform or an 8- to 12-inch-high bench, step, or wooden box.

• Sit a few inches in front of platform with your back to it. Extend your left leg forward and angle it slightly to the left, with knee slightly bent. Bend right leg into a butterfly position so the sole of the foot faces the inside of the left thigh. Lean back against the platform, and rest your elbows on top. The farther you lean onto the step, the easier the exercise; the more upright you sit, the more intense it is.

• Turn your left leg so the inside of the foot and thigh face the ceiling. Lift it up a few inches, keeping the knee soft. Lead with the inside of the heel so you feel the inner thigh working. Slowly lower. Do 12 to 24 reps per set, or work until your muscles fatigue (when they are temporarily too tired to continue).

• Switch sides—extending your right leg and placing your left in butterfly position—and repeat the move for the right leg.