There is a good chance they do take in that much protein but I am sure a lot of it is drank with protein shakes. In which they are sponsored by a company where they get the powder for free.
What is the truth behind protein intake? I see these Pro bodybuilders going to the grocery store and putting so much food in their cart. They claim that they are eating four or five hundred grams of protein a day.
I've tried this myself and it drains my bank account and I end up with stomach pain all day