Spitting in Sport

[imagine]

Here's another sport that does....

"The question has been flooding our inbox and comments sections since the swimming competition began on Saturday. "Why do swimmers spit all the time?"
They don't do it like baseball players; they dip their heads into the pool, open their mouths, collect water and force it through their lips. What's the deal with that?"

http://sports.yahoo.com/blogs/olympi...6057--oly.html

playing at being whales ?

or testing the water for urine?