My senior year in HS the head FB coach asks me if I want to play tight end for him. "Coach, I've never played football, and I'm thin as a rail."
"Ah, we'll coach you up."
"Yeah, probably not, but thanks."
I figured I'd get hurt, and of course I had a bad ankle injury in basketball later that year and had ruined my arm the year before playing baseball.
I got my shoulder mostly fixed, 50 years later, the ankle is still bad.