Yikes!

I had a few concussions when I was little.. I always slipped on ice!! That was not fun.. one time, during gym class, I tripped over a ball and hit my head on the wall and got KNOCKED OUT.. and I didn't even wake up til' an hour later.. and I didn't know what happened to me.. at all.. I lost memory.. I still can't remember.. but I"ve been told that I was running fast and didn't see the ball coming at me!