I have never seen my 20-something-year-old neighbour walking. I have been seeing him since 2+ years and everytime I see him, he is always running. I see him get out of the house and run, either to shop or to college. I see him come home running. It is as if his thought is ‘Why walk when one can run?’ He is like Forrest Gump. Imagine the amount of time he saves by not walking!
I wonder, just supposing, if he encounters some kind of muscle tear or wear at the age of 40+, his doctor would then ask him ‘Why have you been running all your life when you can walk?’