ahlam1399
09-03-2015, 04:08 AM
Runner?s High: How The Brain Replaces Pain With Happiness
http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAdQiuL.img?h=100&w=100&m=6&q=60&o=f&l=f&x=1617&y=367Scientists explain the complicated interweaving of chemicals that occur in the brain when a runner experiences a natural high.
http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAdQiuL.img?h=100&w=100&m=6&q=60&o=f&l=f&x=1617&y=367Scientists explain the complicated interweaving of chemicals that occur in the brain when a runner experiences a natural high.