When I was in high school, I had a class with a guy who was being recruited by a big university here in WV. He got to go up for a game and go into the locker rooms and stuff.
He said right before they went to the field, the linemen would take that sniffing salt and take a huge whiff up the nose. Apparently is made them more alert or something? That's probably well known, I've never heard of it though.
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