Triceps push-up

Works triceps, chest, abs Start in kneeling push-up position, hands directly beneath shoulders, a disk under each palm. Slowly lower body toward floor as you slide left hand back toward rib cage and right hand diagonally to the right in front of you (as shown). Push up as you slide both hands back to start. Repeat, sliding right hand back and left hand forward, to complete one rep. Do 12 to 15 reps.