I've read some of those before. They're almost as infuriating as the shit the op posted here. They boil CICO down to the simplest concept and then say "but there are all these other factors" and I'm just shouting at the screen "no one ever said that doesn't happen." Like the thermic effect of food. Yes, that's part of calories out. Show me where someone said it wasn't. A caloric deficit causing your body to adapt and burn less. Yes, that still fits under calories out. Protein giving you more satiety than fat or carbs and causing you to eat less. Yes, that's calories in. Eating less gives you less energy so after you go to the gym you don't want to do housework. That's calories out and it means you're lazy. If weight loss was easy there wouldn't an obesity epidemic. But I've got news for you. It's possible. And simple. It's called "Eat less, Move More" and it's a revolutionary idea. You CAN do it. You just have to want it more than donuts.