Cobble wrote:
Jordano wrote:
Cobble wrote:
But that's essentially how it works and it is nothing but simple physics and the Law of conservation of energy. You can not make energy disappear nor can you make it appear out of nothing.
I believe this is among the top 5 ST cliches. Any diet discussion and it is just a matter of time before some sharp mind brings up the Law of Conservation of Energy and thermodynamic. Im sorry but: No Shit!
Problem is that we aren't talking theoretical physics here. Efficiency is a kinda big deal in all of this. Some foods are more digestible than others and give more net calories. Cooking increases calorie availability in food, loads of fibre inhibit absorption and protein has a large thermic effect in digestions. Some people exercise at a given workload and waste a lot more energy through heat production. Its thermodynamics but it isn't so simple.
Efficiency tells you how much of what you eat is used for energy, is stored or comes out as shit, sure.
But you can'd go deny the laws of physics. It's IMPOSSIBLE to not lose weight if you take in less calories then you burn.of course, that's why it's still a very good first-order model, but it just doesn't account for the other physiological effects
Jordano wrote:
Cobble wrote:
But that's essentially how it works and it is nothing but simple physics and the Law of conservation of energy. You can not make energy disappear nor can you make it appear out of nothing.
I believe this is among the top 5 ST cliches. Any diet discussion and it is just a matter of time before some sharp mind brings up the Law of Conservation of Energy and thermodynamic. Im sorry but: No Shit!
Problem is that we aren't talking theoretical physics here. Efficiency is a kinda big deal in all of this. Some foods are more digestible than others and give more net calories. Cooking increases calorie availability in food,
loads of fibre inhibit absorption and protein has a large thermic effect in digestions. Some people exercise at a given workload and waste a lot more energy through heat production. Its thermodynamics but it isn't so simple.
+1 to this and the mentioning the consumption of fiber. You can eat the same kcal worth of food, one high in fiber and one low in fiber, but the one high in fiber will result in a more gradual uptake of nutrients and a less sharp insulin response. This does make a difference. Obviously not great enough to completely invalidate kcal in/kcal out, but enough to make kcal in/kcal out an approximation as opposed to an infallible rule. The human body, at the end of the day, is not a bomb calorimeter.