The first time I ever had a dirtbike with front breaks, I was going a pretty good speed and attempted to stop by using just my front break - little did I know slamming on the front break and not touching the back would end up with me being thrown off the bike with my neck breaking my fall. Was out for about 30 seconds (although it felt like 30 minutes) so my friends say, and I remember it being a very peaceful. I could hear but I couldn't see anything, so birds were chirping all around me, the wind was blowing - it felt like total R&R. When I came to there wasn't any pain aside the cuts and bruises. Being knocked unconscious really ain't all that bad from what I experienced.