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CAMP FOSTER, OKINAWA, Japan – A practitioner meditates in the light of a salt rock light USO Kundalini Yoga class Oct. 17 aboard Camp Foster, Okinawa, Japan. - CAMP FOSTER, OKINAWA, Japan – A practitioner meditates in the light of a salt rock light USO Kundalini Yoga class Oct. 17 aboard Camp Foster, Okinawa, Japan. Salt rocks are said to neutralize negative energies in the air. Kundalini Yoga is known as the yoga of awareness, balancing the body, mind and soul. Meditation is used in Kundalini Yoga to calm the mind and connect with the spirit. (U.S. Marine Corps photo by Pfc. Kelcey Seymour)