[rcavezza]

I'm consistently surprised by what the human body is able to achieve. If you've never heard of ultra marathon runners, you should check out this episode of radiolab. This lady runs for days on end in ultramarathons. http://www.radiolab.org/story/122291-in-running/

It's intriguing that she suffered brain trauma and there's a part of her brain that doesn't function as expected. I expect there will be a marathon runner with a very specific brain trauma. The trauma will give him an unfair advantage to run a sub two hour marathon.

[x0x0]

If you find ultras interesting, watch a documentary called _Running on the Sun_ (trailer [1]). It's about the badwater 135: a 135 mi course run in 120F weather through Death Valley with 13k cumulative feet of elevation gain [2]. The runners are insane. Current course records are just below 23 hours.

[1] http://www.youtube.com/watch?v=v-e4bOLAuXg

[2] http://en.wikipedia.org/wiki/Badwater_Ultramarathon

[signa11]

yeah badwater gets a lot of mention in the classic "born to run" book as well. i f you can spare a day or three, highly recommended.