> We already know it's not exactly calories in, calories out. It literally is though. If you burn more calories than you eat you will lose weight. It's tautolo

> We already know it's not exactly calories in, calories out. It literally is though. If you burn more calories than you eat you will lose weight. It's tautological. Now some people are genetically disposed to having different calorie spends all else equal, but that doesn't change the calories in, calories out equation.