Keitha Minchew (right), Chris Schmitz and Jason Parrish use a weight bar to stretch their backs during a class at CrossFit Atlanta on Thursday, December 13, 2012.
121213 Atlanta: Keitha Minchew (right), Chris Schmitz and Jason Parrish use a weight bar to stretch their backs 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