If there's anybody who should have had a concussion and never did, that would be me.
Played college football as a safety
Full contact broom ball... Gary Chown, who went on to play offensive lineman for the Als, checked me over the boards once or twice
Got hit by a car while on my bike and had a few more bike accidents (no helmet)
So many ski (downhill and cross country) accidents I don't remember them all (no helmet)
Caught a few fastballs to the face while working behind the plate (thank God for the helmet)