Why yoga works to relieve stress

Every time snow fell over the past three weeks, stress rose. To yoga expert and researcher David R. Vago, though, the snow has been an opportunity to get exercise shoveling and to enjoy the outdoors. Vago is an instructor in psychiatry at Brigham and Women's Hospital. Sat Bir Singh Khalsa, assistant professor of medicine at Brigham and Women's Hospital, is also quoted.

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