I tried to shriek as the wind screamed in my ears as i ran as fast as I could but I was out of breath.  I am running from a grizzly bear that thought I was harming her cubs, or she thought that I was stealing her food, or both.  I had to stop to take a breather or I was going to faint, but the bear was right behind me so I couldn't stop.  It was live if I kept going and die if I stopped, so I kept going.  I've been running non stop for six miles.  My idea of staying healthy was going for a four mile jog every morning in the woods.