When the body processes a large amount of energy from food and physical activity, it burns more calories at rest, breaks down more fat, and reduces feelings of hunger, regardless of whether total calorie intake exceeds or falls short of expenditure.

Eating a breakfast with more protein made kids burn more fat and feel less hungry after eating, even though they ate the same number of calories as when they ate a carb-heavy breakfast. This suggests what you eat matters more than just how much you eat.

When people eat more and exercise more—even without losing weight—they burn more calories at rest, feel less hungry, and feel fuller. This study shows that just by being more active and eating more, your body naturally burns more energy and craves less food.

When teens with obesity ate more and exercised more (without losing weight), they felt less hungry and ate less at dinner. This suggests being active and eating more can help control hunger, even if you’re not cutting calories.

When people move a lot and eat a lot (but don’t lose weight), their bodies burn more calories at rest and they feel less hungry—this study shows that’s true even if they’re not dieting. So high activity and high food intake together can help control hunger and boost metabolism.

When people exercise a lot and eat enough to match that energy use (without losing weight), their bodies burn more calories at rest — even if they’re not in a calorie deficit. This study shows that just being active and eating well together boosts your resting metabolism.