I did some Parkour back when I competed in springfield gymnastics... I fell from a building landing on my back, wasn't able to breath and got taken to the hospital.. Never took the jump again :| :|
Swimming. I used to sprain my leg a bunch from competitive overexertion. When I was a kid i'd also bang my head into the pool wall whilst doing backstroke laps, made galas pretty embarrassing.
Parkour and basketball. I broke my middle finger and thumb playing basketball. They had to take a pen and snap my middle finger back in place. I screamed so damn loud when they did that.
In Parkour, I landed on my neck a few times doing flips. I was usually successful doing flips, especially Oreos but sometimes no. I would get stunned most of the time, landing on my neck.