Biggest Losers HIIT the gym
RAF MILDENHALL, England -- Tech. Sgt. Ronald Cooney, 100th Air Refueling Wing Air Force Smart Operations for the 21st Century wing facilitator, does arm curls during a High Intensity Interval Training class here Jan. 13, 2011. Sergeant Cooney is participating in the Biggest Loser competition and his goals are to lose 14 pounds and be able to run a half-marathon. (U.S. Air Force photo/Senior Airman Tabitha M. Lee)