jamie found a story on research about what concussions do to athletes, with the insights coming mostly from the study of the donated brains of dead athletes. The NFL has the biggest profile in the piece, but other sports make an appearance too. Turns out that repeated concussions can result in depression, insomnia, and the beginnings of something that looks a lot like Alzheimer's. "The idea that you can whack your head hundreds of times in your life and knock yourself out and get up and be fine is gone," said [retired wrestler] Nowinski. "We know we can't do that anymore. This causes long-term damage."