1/10/2011 - Dalirca Matos signs up for "The Biggest Loser" competition at the North Side Fitness Center here Jan. 10, 2011. For initial sign ups, participants will need to fill out a medical status form and have their height, weight and abdominal circumference measured to determine body mass index. Sign up ends Jan. 14, 2011. (U.S. Air Force photo/Senior Airman Tabitha M. Lee)