I eat a lot of food actually. Somewhere north of 3500 calories most days, but I split it up into 5 or 6 portions. My energy level is always high. If I eat only 3 meals, it crashes for an hour or so after each one. If I had only known I was mortal at age 30...
Actually, my caloric intake is probably fairly high. But a lot of that is in the form of animal fat, so it is both calory-dense, and inexpensive. I was really referring to the volume of food that I eat, relative to others.
The soup I make (which I drink throughout the day), is virtually free, consisting of the inedible parts of cow, combined with plenty of beef fat, and makes up a substantial part of my diet. But while I can still eat a huge meal, I don’t find myself needing one very often (post-workout being an exception). I think a critical key to this is that much of our appetite comes not from energy needs, but rather the body is craving nutrients that are lacking in a modern diet.