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Circadian rhythm: re-syncing with SAD lamps

Kristina Da Silva E Silva, 423rd Medical Squadron occupational therapist, glances at her seasonal affective disorder lamp while she works at her office on RAF Alconbury, England, Jan. 16, 2015. Typically, people who use SAD lamps should sit two to three feet from the light and look into it for 30 to 45 minutes per day. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)

PHOTO BY: Staff Sgt. Jarad A. DentonReleased
VIRIN: 150116-F-UE958-005.JPG
FULL SIZE: 2.29 MB
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