Jason Parrish (left), Chris Schmitz and Leah Polaski perform exercises during a class at CrossFit Atlanta on Thursday, December 13, 2012.
Jason Parrish (left), Chris Schmitz and Leah Polaski perform exercises during a class at CrossFit Atlanta on Thursday, December 13, 2012. CrossFit training combines strength and aerobic exercises into a high intensity workout.