Random

WMG: Man v. Food

Adam has two stomachs
How else does he eat so much?

Adam is a hybrid of a cow and human
See above.

Adama doesn't eat anything off screen
He just eats everything on screen, and the concept of "winning" a challenge is actually a game of heads versus tails.

Adam's stomach is a literal black hole
Hence the iron stomach and Big Eater tendencies.