Built to Run

One of the things that energizes and reassures me on a long trail run is thinking that us humans are built to run.  Our bipedal locomotion strategy is unique in the animal world.  We can also breath independently of our stride and we sweat more than any other animal.  We’re built to run long distances.   This video pretty much explains why:

This hunting technique allowed us to feed ourselves in the prehistoric world without claws, strength or sharp teeth.  I find it amazing.