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Title: What Causes Runner's High?
Views: 373050 Like: 9656 Dislike: 144
Duration: 2:56 Published: 4 months ago Author: channel
Description: After a good distance of running, you might have felt a sensation of happiness. That is the runner's high and some chemicals in your body cause it.

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http://jeb.biologists.org/content/215/8/1331?sid %3D739917de-aaf2-469d-9f3a-ab04329720b7=

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