^ Those are going to ooze awhile!
I went down on a bike once without a jacket, in grass but, still got skin burned off and would have gotten a concussion if I wasn't wearing a helmet. I slid right into a small hole in a briar hedge, narrowly missing a steel culvert.
Safety equipment are good.
You're right. Pennsylvania doesn't require helmets. Run naked cranium if you dare. We got big bugs.