What you eat doesn't just end up in your stomach, after you eat your body begins to absorp the calories to nutrient hungry organs and growing muscles.
So where do the calories go -
10% to the kidneys - your kidneys work to ensure your blood is balanced in the right amounts of water and nutrients
5-10% to the heart - your heart gets most of its energy from fat as it provides more long term energy for this hardworking organ
23% to the liver, pncreas, spleen adn adrenal glands. After the liver pull out the nutrients, its stores excess calories as glycogen
25% to muscles. Muscles require a constant source of energy just to maintain thier mass hence the more muscle you have, the more calories you burn
10% to the brain. Glucose is the brain's fuel, it can not be stored long term so that's why its important to eat regularly throughout the day
10% to thermogenesis. Just the simple act of breaking down the food you eat takes up a tenth of your calories
2-3% to fat cells.
10% to no one knows where. Your body is a big place and some calories go unnaccounted for
