A. Be able to run at twice as fast as your top speed (and be able to maintain that speed) but have calves that are twice as large,
OR
B. Be able to throw any throw (with precise accuracy, speed, spin, and distance for forehands, backhands, hammers, pulls, etc in any weather condition) but have arms that are twice as large. (Note: "arms" include biceps, triceps, delts, both L and R side).