The thermodynamics model has been debunked, because different types of foods with the same calorie count will have different hormonal responses, particularly the rise of insulin. Our kids are not getting fat because they are lazy, they are getting lazy because they are getting fat.
So you're saying that today's cheeseburger causes a different hormonal response than yesterday's cheeseburger? Today's pizza is more fattening than the giant, oily meatball and sausage thing I used to wolf down when I was 23?
Honestly, how do you say this stuff and keep a straight face?