
Spiritual retreats change feel-good chemical systems in the brain - upen
http://exactlyscience.com/archives/11668.html
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DrScump
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[http://www.jefferson.edu/university/news/2017/03/23/spiritua...](http://www.jefferson.edu/university/news/2017/03/23/spiritual-
retreats-change-feel-good-chemical-systems.html)

