>I was a believer of the thermodynamics-like theory that deltaWeight = weight + (calories in - calories out)*stuff; many a post on HN convinced me that it's not

>I was a believer of the thermodynamics-like theory that deltaWeight = weight + (calories in - calories out)*stuff; many a post on HN convinced me that it's not true Like doing big-O notation, there are constants that get factored out. Some people have a higher or lower base metabolism, or respond differently to exercise. You're not proposing, though, that it's possible to maintain or gain weight at a calorie deficit? That would be magical.