What an incredible documentary! To watch these people/athletes/record holders and breakers put their bodies under such extremes and danger is incredible. I never seen anything like this. SPOILER, and to hear that so many people lose their life doing this is just crazy and very sad. The ending broke my heart. In the beginning I completely assumed someone else had passed away in the end. That was a big shock!! Also I couldn't stop watching. I highly recommend this to everyone. I will definitely be watching again.