Check it—these compound moves will get you sexy arms faster than those old one-spot-at-a-time sets. "Maximizing the number of muscles that you use is a better return on your rep-vestment," says Noah Neiman, a master trainer at Barry's Bootcamp in New York City who has a devoted—and carved—following. Do three rounds of his circuit using
Explosive plyometric jumps and lifting huge racks of weight may be impressive, but those exercises aren’t for everyone. Lack of strength and flexibility or simple inexperience can quickly turn athletic bravado into a visit to the emergency room. In fact, there are a number of moves that the best trainers generally refuse to do themselves.