Because when you swim you can't do this:
www.corriere.it/.../TUFFO4.jpg
Ow. Ow. Ow. Fortunately, she escaped with no horrible injury...I've included the story below:
MONTREAL (AFP) - US diver Chelsea Davis smacked her forehead into the 3m springboard during the preliminary competition at the World Swimming Championships but escaped serious injury.
"Chelsea has no fracture, maybe just a little chip fracture but basically her nose was not broken," said US diving team leader Bob Rydze.
"The plastic surgeon is putting two or three stitches up on the bridge of her nose. That's the only place she was cut.
"She knew she hit the board, and she knew what dive she hit the board on, which was a very good sign. A lot of times divers hit the board and forget on what dive they hit the board."
