Your heart rate rises, your blood vessels constrict, and your air passages dilate. It's an adrenaline rush: one of the most instantaneous highs the human body can produce. Join Bear Grylls and the world's most extreme adventurers and get your own ...
Added: Aug 26, 2011
Views: 5990 Views
Runtime: 00:15
The MythBusters answer viewer questions and respond to criticism about past episodes. (07:21:00)
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