[Sohcahtoa82]

> Calories in calories out (CICO) is the what, not the why.

CICO is basic thermodynamics, but yeah, it's incredibly reductionist.

OMAD (One Meal A Day) isn't some magic bullet that creates weight loss. If your One Meal is 3000 calories, you won't lose weight. What it's supposed to do though is train yourself to manage hunger. I can eat a massive meal (24 oz steak, 8 oz of broccoli or green beans, and a couple wheat rolls) and still be hungry less than 3 hours later. Some people have suggested OMAD and said that supposedly, if I force myself to remain hungry most of the day, eventually I'll get a bit numb to the sensation and it'll allow me to recalibrate me sense of hunger.

Keto is similar. It helps you reduce the CI part of CI by eliminating carbs which do very little to make you feel full compared to protein, fat, and fiber. But if you're still eating 3,000 calories/day because you're eating 24 oz steaks and half a pound of bacon and 6 eggs every day, then you won't lose weight.