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)
Senior Airman Corey Andersen, 921st Contingency Response Squadron crew chief, leads his unit though stretching exercises prior to a morning run July 15, 2015 at Travis Air Force Base, California. (U.S. Air Force photo/Ken Wright)
Capt. Caleb Bury, 921st Contingency Response Squadron operations flight commander, sprints to the finish line during physical training July 15, 2015 at Travis Air Force Base, California. (U.S. Air Force photo/Ken Wright)
Tech. Sgt. Justin Stanko, 921st Contingency Response Squadron aerial port team member, makes a final stride at the end of his unit's physical training July 15, 2015 at Travis Air Force Base, California. (U.S. Air Force photo/Ken Wright)
Senior Airman Corey Andersen, 921st Contingency Response Squadron crew chief, makes a strong finish during his unit's physical training July 15, 2015. Andersen leads PT twice per week, guiding and encouraging fellow Airmen through strenuous cardiovascular exercise. (U.S. Air Force photo/Ken Wright)
Airmen from the 921st Contingency Response Squadron stretch as they wrap up their twice-weekly physical training July 15, 2015 at Travis Air Force Base, California. Doctors recommend moderate stretching before and after exercise to help improve the range of motion of joints and boost circulation. (U.S. Air Force photo/Ken Wright)