From a biological perspective, you need to eat fewer calories than you burn to lose weight. There's no way around it. Once your body's energy needs are met, extra calories are stored for future use — some in your muscles as glycogen, but most as fat.

Is burning 300 calories a day good?

Researchers say you can improve your metabolic health by cutting just 300 calories a day from your diet. They say the small calorie reduction can improve biomarkers for blood pressure, blood sugar, and cholesterol.

How are calories removed from the body?