When I was 2 I walked into a brick corner (fireplace) and cracked my head open. I also knocked myself out at the same time. So I was rushed to the hospital. Hit my head again later that year and knocked myself out again. Back to the hospital, nothing serious, go home. Knocked myself out at least twice a year until I was 8
Two such incidents: When 5 years old, I donned a red Superman cape and tryed to fly by diving off the back deck. Landed on my head and knocked myself out. 2nd incident, when I was still 5, at Arby's, my head was level with the hinged garbage can doors (that say Thank You). I punched the door, it swung in, then swung back out, hit me in the head and knocked me out cold.
Also, when 3 I told my sis to pull me up the stairs by my arms. She yanked. I stayed put. Rushed to the hospital, dislocated arm.
When 3, I leaned all my weight on a dinner tray. It didn't hold up. Rushed to the hospital, broken collarbone.
I broke my thumb once too, but didn't go to the hospital.