OMG!!! - 冠军大胃王

I was watching wo cai jus now when i watched these pretty and suppppperr skinny girls competing in 冠军美女大胃王。
My jaw literally dropped when i saw the amount the food they ate while competing with each other. OMG. WHY ARE THRY ALL SO SKINNY? Gosh, super unfair la. It also make me wonder what is their stomach made of. Rubber?
Thank god none of them is my gf. No matter how pretty they sure eat till u pok gai. I really pity their boyfriend( if any's attached.) =X