Thursday 23 August 2012

Blind people often find it hard to align their sleep-wake cycle with 24-hour day

http://www.washingtonpost.com/national/health-science/blind-people-often-find-it-hard-to-align-their-sleep-wake-cycle-with-24-hour-day/2012/08/06/5578f090-bb0d-11e1-abd4-aecc81b4466d_story.html

/ rhythm sight /
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