[perlpimp]

I found regular running increases not only health but quality of my life as well. The article states that in an overt way efficency of walking compared to youth - you won't get tired when you get there. Honestly day without running for me - not to say wasted but lost in some way as my attention is dulled, body feels less alive.

[thesz]

You may get hooked on endocannabinoids, if you run intensively for prolonged time (>1hr).

Running can and will mess with your endocrine system.