2. Riding keeps your brain young


Ryuta Kawashima’s paper in the International Journal of Automotive Engineering two years ago backstops what a lot of us already suspected: Riding your motorcycle a lot keeps your brain sharp in the same way that having to run from saber-toothed tigers kept our caveman ancestors on the stick.

Without any doubt, riding a motorcycle is a risk-taking behavior, which should induce emotional and physical stress. Emotional and physical stress has been known to increase the nerve growth factor level in the blood, which is important for the growth, maintenance, and survival of sympathetic and sensory neurons, for protection against various psychiatric diseases, and for improvement of cognitive functions. Although, most of the previous investigations were conducted using animals, the biological and psychological mechanisms related to mental and physical stress can also support our results.