1, digestion: When people eat, the stomach will secrete gastric acid, bile and digestive enzymes, and the food will be decomposed through digestion so as to be absorbed or utilized by the human body. These digestive processes will consume a certain amount of energy and directly affect the weight.
2, moisture: food contains a lot of water, after digestion, water will be absorbed by the human body, and this part of the water will increase weight.
3, fat: when cooking, meat is easy to leak oil, and the oil content is relatively high, it can not be absorbed by the human body immediately after digestion, so it will increase weight.
4, excretion: people will discharge a certain amount of digestive residues after eating, these residues will be excreted, leading to weight loss.
Generally speaking, the weight after a meal is lighter than before, because the energy consumed during digestion, the water intake, the oil discharged during excretion and the digestive residue will all affect the weight, leading to this phenomenon.