Tuesday, December 29, 2015

What's Causing That Stitch in Your Side?


Published on Dec 29, 2015 SciShow

"What's the deal with that sharp pain in your side when you're trying to win that marathon? SciShow has the answers!

Hosted by: Hank Green"

1 comment:

baili said...

pain to me is a great source of self empowerment,best wishes