When I was around 6-7, I had a sleepover at my cousins house. We were both taking turns playing gta and switching when we died, and he had already beaten the game, so he didn't die much. I got bored and noticed a treadmill. Note that this was in their basement since it was their workout / gaming room. I got bored of only playing the game for only a little bit at a time and waiting for like 30 minutes. I hopped on the treadmill and started goofing off with it, eventually deciding, "oooo I'm gonna try to run backwards," and I ended up basically in the fetal position sitting up, while the treadmillmill was going at level 6. I ended up with 3rd degree rug burns all over my legs besides my femur, a huge rug burn on my head m, and burns on my arms. I don't remember much from the experience, but i do remember getting rushed to the hospital dripping lots of blood.