Lisa Merriss, right, wife of Airman 1st Class Eric Merriss, 28th Operations Support Squadron intel anaylsis, and Michelle Haleck, registered dietician, practice breathing exercises during the Fit Pregnancy yoga class at the Health and Wellness Center on Ellsworth Air Force Base, S.D., Feb. 16, 2012. The Fit Pregnancy program offers yoga and includes information on proper nutrition for pregnant women. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)