The Beast Reach exercise works your shoulders, triceps, abs, hips, butt and legs.
Starting in this crouch position, reach your arms forward as far as you can then straighten your legs so that your upper body comes forward into a point position. You should feel like you're balancing on your tiptoes. At the same time, bring your knee to the outside of your elbow then return to the crouch position. Do 2 sets of 12 reps, alternating legs.