121213 Atlanta: Chuck Pruitt hangs from a bar as he does pull ups during a class at CrossFit Atlanta on Thursday, December 13, 2012. CrossFit training combines strength and aerobic exercises into a high intensity workout. Jonathan Phillips Special
121213 Atlanta: Chuck Pruitt hangs from a bar as he does pull ups during a class at CrossFit Atlanta on Thursday, December 13, 2012. CrossFit training combines strength and aerobic exercises into a high intensity workout. Jonathan Phillips Special