Distance running is what made us human.
I am of the same opinion ("Born to Run" and "Natural Running" both support that belief).
When I run, I feel I am doing something very natural, very primal. It just feels right!
Movie “Zulu:” I recall hearing those tribesmen could get up in the morning, run 40 miles, then fight a battle.
Looks like these natives of North America could run 100 miles, and then fight a battle.
These guys are endorphin junkies, to the max.
Aerobic exercize causes the human body to release endorphins into the blood, which are painkillers, and produces a mild euphoria.
aka “runners’ high”