If I eat whatever I wanted for free, I’d eat Ribeye most of the time for dinner and Reubens for lunch. And cold pepperoni pizza for breakfast.
The only problem would be not ballooning to 300 lbs.
That would be fine if you substituted a couple of fried eggs for the breakfast pizza and have that lineup every other day (36 hour fast) with lots of liquids. You could maintain easily on a regimen like that. It would be expensive though. Ribeyes ain't cheap.
Ribeye steak sitting in a plate of blood is my favorite.