One of the guys I used to skate with as a teenager still suffers from very bad seizures from cracking his head on a hill bomb. Smaller wheels, speed wobbles, tiny rocks, and him with no helmet. Messed him up pretty bad when that wheel pinched and threw him. I have another friend who lost a ball when he janked out a boardslide on a 6 step rail and landed full nutter. You gotta be careful out there. I have a nice medical file of broken, sprained, and tweaked muscles and bones from hucking myself off just about anything I could climb up on. Skate smarter than I did as a kid.