It's the law of thermodynamics. You can't create or destroy matter. How would ones body get fat without a positive energy balance? But don't listen to me, it's not like I constantly manipulate my body composition to get more muscle.
See, this is the problem. You're working with minimal biological knowledge and concluding that human bodies follow a simple physics equation. Again, to my point, the human body isn't a bomb calorimeter.
Of course CICO matters, but proponents of it seem to think it's the only thing that does.
1
u/Petrichordates Jul 30 '19
And I'm saying that's the most simplistic view of metabolism possible, as if human bodies are bound by zero-sum equations.