I played rugby for a few seasons, and I had several concussions. I never blacked out, but I temporarily lost my ability to speak (several minutes), as well as got emotional. I cried though I wasn't upset, then I would get enraged even though I wasn't mad at anything (except maybe getting a concussion).<p>I'm in my 30s now, and I can't remember things like I used to. I can be thinking of something, and it "just disappears". I feel like my mind behaves like a 65 year old, not a 30-something. I used to have a lot more focus, more dedication to certain things, and it's harder now.<p>I don't know what combination of growing older, drinking, or concussions have caused my issues. And it's hard to say I regret playing, because it was fun and a part of who I am. However, concussions are not a joke, and I wish more players had the sense to step away from the game after getting a small number, rather than thinking "it's normal" and playing for 20-30 years.