I like to make all my life decisions while enjoying a runner's high. "Get dumb" is one way to put it, but I like to think of excersing as equivalent to meditation; meaning to clear one's mind of all noise. Arriving home from a long day of school, I choose not to interact with my family until I go on a run. Either they are crazy or I am, and after a run neither matters. But don't make decisions after a long trek across NM. Last time I visited I wanted all of us to get matching tattoos.