The big difference is the effect of a calorie for each person differs. How the body chooses to burn a calorie differs. If person A reduces their diet by 3000 calories in a week they might lose a pound. Person B might not. CICO is literally thermodynamics, you’re very right. How our bodies react to thermodynamics varies quite a bit.
The big difference is the effect of a calorie for each person differs. How the body chooses to burn a calorie differs. If person A reduces their diet by 3000 calories in a week they might lose a pound. Person B might not. CICO is literally thermodynamics, you’re very right. How our bodies react to thermodynamics varies quite a bit.