Carlie Salisbury, of Bloomington, Ind., demonstrates a king pigeon pose that focuses on stretching the quadriceps. Salisbury will teach a free yoga class Sept. 14, 2013 at Semper Fit Center in honor of National Yoga Month. The class is normally free to active duty service members and otherwise available by group exercise class ticket. (U.S. Marine Corps photo by Christine Cabalo) - Carlie Salisbury, of Bloomington, Ind., demonstrates a king pigeon pose that focuses on stretching the quadriceps. Salisbury will teach a free yoga class Sept. 14, 2013 at Semper Fit Center in honor of National Yoga Month. The class is normally free to active duty service members and otherwise available by group exercise class ticket. (U.S. Marine Corps photo by Christine Cabalo)