>>76380229Pretty sure he's talking about how meat takes more calories to digest, I believe in some cases it can use up to 28% of the calories of a piece of meat to digest it. Also, some research suggests that calorie amounts may be wrong due to how the food is prepared. So for processed foods, the base ingredient (wheat, barley, etc) may have a set calorie amount, but if you turn it into flour and then into a cereal or snack, it's easier for the body to digest and uses less energy to process your food, so it's possible you may be getting more calories out of your processed snacks than you think.
This might explain why people who claim to be calorie counting can get it so wrong -- the labels just aren't that trustworthy. Even cooking food can alter the calorie count upwards (supposedly with meat too, although i'd imagine the fat loss on red meatwould counteract that so long as you are't using butter or other additions). So CICO is true, but our measurements of it are likely off quite a bit due to how we process and change things.
*There are also claims that mouth and gut microbiomes can have some effects on calories. This would make sense as they play a big role in digestion, but I don't think anyone has really measured it before, and microbiomes are so different it would be hard to have a control.