The energy of human body comes from protein, fat and glucose. In addition to the above ingredients, food also contains vitamins, trace elements and other substances. Except some substances are absorbed and digested, most substances will accumulate in the body, which can supplement the nutrition and energy needed by the human body.

If you don't eat for a long time, your energy intake will be insufficient, which will lead to weight loss. Under normal circumstances, skipping meals can last for about 7 days, so most people need to maintain energy balance between 5 and 7 days. If you only drink water and don't eat, you need to decide according to your physical condition, willpower, metabolism and even desire to survive.

How long does it take for people to consume fat without eating?

People generally consume fat without eating for 0/2 to 24 hours. Usually, the sugar and calories you eat before eating will only consume fat if the calories and sugar in your body are insufficient. If a person is weak, he will generally decompose fat without eating for 12 hours, but if he is strong, he may decompose fat after 24 hours.

This is only an approximate reference time. Everyone stores different glycogen content, and the specific time needs to vary from person to person. But most people's fat consumption time often begins about one day after stopping eating. By fasting, you can achieve the function of consuming fat, but at the same time, you will also consume muscle, and obesity will rebound after normal diet.