I like to run. Apparently, this gets me high.
Last year, researchers at the University of Arizona published a study in the Journal of Experimental Biology examining the "neurobiological rewards" of treadmill running in 10 humans, eight dogs and eight ferrets.
No, the researchers were not high when they came up with this study design. For humans and canines, distance running has an evolutionary advantage for chasing down food and running away from things that want to turn us into food. Ferrets were included in the study because they don't get high from running, which makes sense because these weasels hunt more by skulking and sprinting.
My point is: The human...