Skytop said
"Not all hockey players have missing teeth, I only have one that has a corner chipped off but most of it is still there!"
Yeah, but the man has a point: remember Johnny Bauer, the Toronto Maple Leafs goalie who got hit so many times in the face (knocking out most of his teeth) that he came up with the idea of a face-mask? First goalie in the NHL to wear one, back in the early 60's, I think.
But that doesn't help much with the diaphragm question.
Papa David