Access to Electric Light Is Associated with Shorter Sleep Duration in a Traditionally Hunter-Gatherer Community

[lorna]

This is a great study. Two different communities, one with access to electric light and one without. Subjects without electricity slept about 43 minutes longer in summer and 56 minutes longer in winter.

http://jbr.sagepub.com/content/30/4/342.short?rss=1&ssource=mfr