Bibliography (8):

1. ​ movie#free-solo

   [Transclude the forward-link's context]

2. In the Running

3. That Which Does Not Kill Me Makes Me Stranger

4. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Ultramarathon  :

      https://en.wikipedia.org/wiki/Ultramarathon

   2. Tor (network)

   3. Borderline personality disorder

   4. Dopamine

   5. https://en.wikipedia.org/wiki/Pericarditis  :

      https://en.wikipedia.org/wiki/Pericarditis