Need a reason to run? Here's 7:

Also, being fit helps prepare you for the Zombiepocalypse. You need to be able to outrun the undead!

Here are my reasons. I like having 25-45 minutes alone, exploring my neighborhood, making up stories about my neighbors, listening to myself breathe and the enjoying nature sounds. Not to mention getting that regular dose of Vitamin D.

It's convenient and cheap. All you need is a good pair of shoes--preferably Vibrams.