Stepping up your New Year fitness goals
A gym class instructor lunges while stretching a rope tightly during a core performance session at the Ramstein Southside Fitness Center Dec. 8, 2015, at Ramstein Air Base, Germany. The fitness center provides a variety of classes that exercise different muscle groups at different levels of intensity. (U.S. Air Force photo/Airman 1st Class Lane T. Plummer)

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