The human body has two ways to supply energy, one is carbohydrate energy supply; Second, gluconeogenesis provides energy. Carbohydrate energy supply, that is, the carbohydrates we consume in our daily diet (such as various staple foods, starch, sugar, etc. ) directly provides energy for the body, and the unused energy is stored in fat. This is the reason for the long meat.
The second way of energy supply is called gluconeogenesis energy supply. That is, when the glycogen in the body is exhausted (about 48 hours), the body can supply energy by converting protein into glucose. But gluconeogenesis needs the participation of dihydroxyacetone phosphate. Where does dihydroxyacetone phosphate come from? However, from the point of view of fat decomposition, the energy supply efficiency of sugar is very low, even less than that of carbohydrate 10%, and the speed is slow. Therefore, a lot of energy will be wasted. This is the basic principle of lipolysis for energy supply. At the same time, because in the process of fat decomposition, a large number of them become ketone bodies. Ketone only released 10% energy. The rest of the urine is discharged, and there is still a lot of energy left in the ketone body. Therefore, you have a lot of unused energy, which is excreted with urine. Originally, burning 1g fat completely produced about 9 calories, but now the utilization rate is less than 10%.
Is it a little confusing? Let me give you an example to help you understand: gasoline and wood contain the same calories, gasoline is like carbohydrates, and wood is like fat. Gasoline, if you light it, it will catch fire immediately and burn completely. This is the carbohydrate we eat, and we will get energy immediately after eating it. Wood, you finally lit it, only burned a part, and most of the rest turned into charcoal. The utilization rate is extremely low. It is the fat metabolism in our body that has finally started, and most of it has become ketone bodies, with extremely low utilization rate. If the wood burns incompletely, there will be charcoal. When fat is burned, ketone bodies are produced. If you lose weight in this way, whether your body has started "fat metabolism" can be detected by a "fat burning test paper", so that weight loss is no longer based on feelings. The more purple the color, the faster the fat metabolism, and the yellow color did not start the fat metabolism.
Now you have made it clear that only when the body starts the gluconeogenesis energy supply mode, that is, the fat energy supply mode, can it start to consume the body's fat and start to lose weight, so how can it start fat metabolism? The first stage is to "cut off carbon", cut off the intake of carbohydrates, then consume your own glycogen, and then start the fat energy supply mode. The start-up period of weight loss is actually the process of bringing your body from free glucose energy supply to complete ketone energy supply. To put it simply, in fact, there are four stages in the energy transformation from carbohydrate to gluconeogenesis: your body will go through four energy-supplying states during the startup period, namely, four stages: 1) free glucose energy supply, 2) glycogen and gluconeogenesis energy supply, 3) gluconeogenesis energy supply and ketone energy supply, and 4) all ketone energy supply. Below I will talk about these four processes in detail.
The first day of weight loss: free glucose for energy supply
At the beginning of the first day, your body is still powered by free glucose. It can be said that most of the time, all the organs in your body are powered by free glucose. But in the afternoon and evening of the first day, the glycogen in the body began to provide energy, and at the same time, the liver began to experience the process of gluconeogenesis into glucose in protein. At noon or afternoon, fat begins to break down into ketone bodies, but the number is small. So on the first day, you mainly consume free glucose, glycogen and a little fat.
However, this trend is very good. It's like you ran 1500m, and your body changed from a static state to a moving state. However, this state of motion has just begun. It doesn't matter, don't worry, this state is very short, and you will start to consume a lot of fat immediately. The next day.
The second day of losing weight: glycogen, energy-supplying sugar isomerization
When you lose weight on the second day, your free glucose is at a very low level. At this time, your brain still uses free glucose to provide energy, and your liver uses glycogen to provide energy. At this time, your fat decomposition is already great. Fat is broken down into ketone bodies, which are provided to your extra-brain and extra-liver organs.
On the first day, you passed the free glucose energy supply stage; Now that the second day is over, you have passed the energy supply stage of glycogen and gluconeogenesis. Of course, there are actually fats and ketones that supply energy, but we name the stage with the most important symbolic energy supply characteristics. So, the next day, what you spend is called "glycogen and gluconeogenesis" for energy supply. So, next, let's talk about the third day. You will reach a new stage.
The third day of weight loss: gluconeogenesis, ketone body energy supply
On the third day of losing weight, there will be an obvious gap in glycogen in the body, and the speed of energy supply by gluconeogenesis can't keep up with the energy demand of the brain. What do we do? The body is very smart, and the body has completely started the energy supply plan B. (a) the plan is a conventional plan and a conventional model. The energy supply mode of 99.99% people around us. That is, free glucose provides energy. )
Plan B is a backup plan for the body to cope with the shortage of free glucose. That is, consuming fat to provide energy. Lose weight, lose weight, the essence is to implement the plan B of body energy supply.
At this time on the third day, your free glucose is not completely absent, but has been at a very stable low level. So, you won't have hypoglycemia, and you won't have persistent high insulin.
As we all know, when insulin is high, you can't lose weight. Losing weight is done with low insulin and high glucagon. On the third day, the brain is still powered by glucose and some ketone bodies produced by gluconeogenesis, but other organs outside the brain are mainly powered by ketone bodies decomposed by fat.
By the end of the third day, you have passed the stage of "gluconeogenesis, ketone body" energy supply. That is to say, at the end of the third day, the body energy supply plan B has been fully started. In other words, after the fourth day and the fourth day, you will start to fully implement plan B.
The fourth day of weight loss: full ketone body energy supply
Scheme b, we call it the whole ketone body energy supply stage. In other words, at this stage, your brain organs, liver, extra-brain organs and extra-liver organs mainly rely on ketone bodies to provide energy.
Therefore, this stage is called the whole ketone body energy supply stage. At this stage, your body's fat supply will be fully motivated!
It should be noted that in the early stage of gluconeogenesis and lipolysis in protein, a few people may have slight hypoglycemia. Students who are generally engaged in manual labor, sports, or working overtime and staying up late are prone to appear. From high blood sugar to relatively low overall blood sugar, the gap between the body's habitual blood sugar levels causes the feeling of hypoglycemia. Generally, this feeling is fatigue and irritability. The more serious feelings are: rapid heartbeat, dizziness, chills and shaking hands. Usually sit down and drink a cup of warm water for 5 minutes, and this situation will pass. If there is no relief. There are still cases of rapid heartbeat, dizziness, chills and shaking hands. I suggest eating a piece of sugary chocolate or drinking half a bottle of sugary drinks.