Reactive squat

(works abs, legs, butt, shoulders) Stand with abs tight, feet wide and parallel. Bend elbows 90 degrees and press wrists together in front of you so hands form a V. Raise elbows to shoulder level or slightly higher. Bend knees and lower into a squat—hips behind heels—as if sitting in a chair. Gaze at hands (as shown). Straighten legs, keeping arms raised, and repeat for one minute. Go through entire series of moves once more.