Tagged a tree with my bars at about 20-25 and flew head first into a tree about 10 feet away. Didn't get knocked out but my head was spinning and hurt quite a bit. I took off my helmet and oriented myself for a bit. Slight head ache that is almost entirely gone. Called the doc and they said to have some one wake me up every couple hours and that I should be fine being that I only displayed minor symptoms. All I have to say is thank god for my helmet, and that I didn't fly 2 feet farther causing me to foll another 5-6 feet off a drop.