My daughter didn't play all season due to a shoulder injury. We had a parents vs. U14 girls scrimmage last night and she jumped on the ice with her team. She was skating well, brain was working, feet just a bit slow. Midway into the game, she skated out from the bench to the center ice faceoff circle after a goal. While stopping, she stood too much upright and fell over backwards...onto her back, and her head smacked the ice. Concussion. Yay. :( Kind of dumb of her to not be in hockey position, nor keep her head up, but she was out of practice. I hate it when my kids hurt.