Ha.

'Last summer, the Cherry Creek High School science enthusiast was trolling for a good research project and considering, among other ideas, an analysis of teen athletes' risk of concussion - a head injury that causes temporary loss of awareness or consciousness. Then, while playing around and scrambling on some rocks, he fell and hit his head on the ground.

"Ironic. I was messing around and smacked my head. It was really dumb," Greos says. "But it solidified my interest in head injuries." '

Teen turns concussion into red flag