Airmen from the 921st Contingency Response Squadron run laps around a track early July 15, 2015 during their unit's twice-weekly physical training at Travis Air Force Base, California. With a high operations tempo, physical fitness is key to Airmen maintaining resiliency. They Mayo Clinic suggests that coupled with a healthy diet and 7-8 hours of uninterrupted nightly sleep, an active lifestyle can help reduce stress and lead to a healthier and longer life. (U.S. Air Force photo/Ken Wright)
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