I used to wrestle and do some mma; cut open my chin from a head butt, torn meniscus, separated shoulder, fractured the wall of my nasal cavity, one concussion that I know of, and I tore some sort of ligament in my thumb. Worst one (in terms of pain) was broken ribs with torn cartilage/muscle From being an active kid; stitches twice on my face by the time I was 4 (once on my left eyebrow, once in between my eyes), bilateral stress fractures in my shins, and a broken collar bone and another concussion from a snow skiing accident. I got a scar on my shin from scraping the skin off, I saw the bone on that one lol. Cool story for the stitches between my eyes; I was living in Alaska at the time and my family had a small propellor plane. My dad had to fly me back into Anchorage (after a few beers) to get me stitched up.