Three physical challenges that suggest the human body, combined with mental determination, is truly limitless.

Originally released by Bellum Entertainment, 2015. Streaming video file encoded with permission for digital streaming by Infobase on June 03, 2016.

Skydiving: Terrifying Heights and Thrilling Falls (2:31); --Skydiving: Military Technology (2:31); -- Mountaineering: Scaling Great Heights (3:27); -- Mountaineering: Earliest Recorded Ascents (1:59); -- Mountaineering: North Face of Mount Everest (2:11); -- Running: Most Popular Exercise in the World (2:22); -- Running: Ancient Greece and Extreme Racing (3:09); -- Origins Spotlight: Running for Fun (1:46); -- Credit: Skydiving, Mountaineering, & Running: Origins-The History of Everything! (0:23); -- Most popular exercise in the world (0:00); .