Eh, what the heck, I'll throw my lot in the mix. Here's my grandson and his new trick - jumping in the pool. Just last year he would freak out (3 yrs old) if water even splashed on his face but now (4 yrs old) he's all about going under the water. Man, they grow up fast...
Growing up in LA during the 70's, we did some bata$$crazy things on our skateboards and most of us can still walk and even a few can manage to count to 10. "protection - smotection" I always say...