What we need is food that requires all of our concentration to get just get down our throats, and then some.
I propose that henceforth we all dine on raw cow hide and Rhinoceros leather. For desert, cactus and tree barks. It will take all of our concentration and will to just get it in our mouths. It will never be trivial, it will never be easy.
Next, we should aim even higher and stuff steel into our mouths like this man!