[ChadNauseam]

You say calories in calories out, but it’s not true. A rock has zero calories, but eat a rock that’s too big to pass through your digestive tract and you’ll gain one rock-worth of weight (followed by death).

That’s why I prefer a much more simple and natural model: mass-in vs mass-out.

[pjc50]

Kind of difficult to measure exhalation mass without special equipment. And that's how weight must be lost: you have to oxidise the carbon in it and breathe it out.

[dafneee]

E=mc^2

Calorie-in vs calorie-out, or mass-in vs mass-out is really the same thing in the end.

[fknorangesite]

TIL I am a nuclear reactor.