Look I don't want to wax philosophic but I will say that if you're alive you've got to flap your arms and legs you've got to jump around a lot for life is the very opposite of death and therefore you must at very least think noisy and colorfully or you're not alive.
I was about 14 and my friend's stepdad asked me to do a 10K with him because his son - who was more into basketball - didn't want to. It was amazing and I still remember the time I got: 48:23.