In the process of slimming, how does the body change and how does the meat change? Not to mention from fat meat to lean meat. I want to know exactly how it changed.

There are two kinds of slimming processes: one is healthy and the other is pathological (such as drug abuse and severe malnutrition). Healthy slimming refers to the process of reducing saturated fatty acid glycerides in the body. Fat is a buffer, heating agent and "charger" of human body, but it also has a negative impact on the incidence of cardiovascular and cerebrovascular diseases. The process of human energy consumption is to consume blood sugar, glycogen, fat and protein (including muscle). You can do an experiment yourself first. First, after eating, blood sugar will rise. Insulin converts blood sugar into glycogen, muscle glycogen, a small amount of amino acids and fat. Then after a while, you start to feel hungry again, and your stomach will be upset. This is the nervous system reminding you that it's time to eat. If you still don't eat, the liver sugar will be consumed first and the hunger will disappear. After a few meals (don't try), it is basically consumed. Eating a full meal with an empty stomach not only fails to lose weight, but also increases weight. The best way is to eat some low-calorie food, the purpose is to deceive your satiety nerve center, eat less and eat more meals, and exercise more. In order to increase lean meat and reduce fat, you can eat high-protein food such as tofu (don't overeat).