People on a high-protein diet usually pick one meal a week to eat whatever they want — and when they do, they eat more that day but don’t feel any hungrier or fuller than usual.

Eating a meal you choose yourself makes you eat more that day and a little less the next day — but then you go back to normal.

When people on a high-protein diet eat a meal they choose themselves, their total calories go up — but they don’t feel any different in hunger or fullness.

Eating a meal with less protein makes you eat more calories — but not because you’re hungrier. Something else about the meal is making you eat more.

Even when people eat more or less than usual because they chose a different meal, they don’t feel hungrier or fuller than normal.

What you eat in one meal matters more for how many calories you eat that day than how hungry or full you feel.