Occasional food shortages can lead to poor appetite in general and the body's tendency to store more fat. You see, your body doesn't care if you are starving on purpose or not, it will take care of you, ensuring your survival. This is part of our design and survival mechanism, storing energy in the form of glucose (in the blood, muscles and liver) and subcutaneous fat in case of lack of food. Intermittent fasting "scares" the body and makes it accumulate more energy in reserve and increase appetite during periods of non-fasting ("last week we were starving all day, and before that we also sat without food, what if we need to prepare again?"). This is why diets don't work, by the way. The logic of your body may be different from yours, take this into account.
In my opinion, fasting for a healthy body is justified only in one case - if there is no appetite. It means that your body is busy with something else and it has no time for food now.
It will not bring you any harm or benefit - then why do this?
But medical fasting is a thing, but according to the mind.
Medical fasting begins to work on the third day only. Then why torture yourself for one day.
How fasting works. We have T-lymphocytes in our body - they recognize all kinds of byaka - bacteria, viruses, poisons and toxins and destroy them. But if you are starving, then on the third day, T-lymphocytes begin to attack their own cells. But healthy cells are too tough for them, but sick cells, damaged cells or dead cells are within their power and taste - and T-lymphocytes begin to cleanse the body of them.
Due to this, you rejuvenate and heal. Only here you need to know when to stop. I am categorically against the English fasting (28 days).
Start a fashion every three months to fast for 3 days or every six months every 5 days. Everything is in your hands, but you must drink water! Here is a photo of a lymphocyte
Before starting any type of fasting, you need to consult with your doctor. After all, there are gastrointestinal diseases in which fasting is not recommended, or even prohibited. Nevertheless, if you are a conditionally healthy person, then this will not bring you any harm. What about the benefits? There are health benefits, because you deprive yourself once a week of any sources of energy, and accordingly force your body to remove energy from the depot (in the case of a one-day fast, this is muscle glycogen and partly of the liver). Therefore, if you consider fasting for one day for health purposes, you:
If you look at it on a large scale, then a month you go hungry for 4 days, for half a year 24 days, and a year 48 days. Assuming an average of 2500 calories per day, you create a 120,000 calorie deficit. Agree, the figure is impressive. This will give you a positive effect on maintaining / decreasing BMI, and no more. This is what one day fasting can be practiced at home. To achieve a healing effect and the so-called autophagy, you need to apply longer periods and use different types of it.
Still, if you decide to practice 24-36 hour fasting:
Tip 1: start at small, train your body to break down glycogen in large quantities. Indeed, in a day of fasting, almost all reserves can be used up, especially among untrained people (here I mean athletes and people with increased physical activity in whom glycogen accumulates much more intensively due to exhausting training) people.
Tip 2: during while fasting, be more in the fresh air, walk, meet friends, travel.
Tip 3: heavy physical training is not recommended. Do yoga, somatics, Pilates.
Tip 4: use the techniques of entering, directly fasting and exiting it.
Tip 5: if you feel unwell at some stage, calmly exit from fasting, and try it in a week.
And finally, in order to be healthy, beautiful and fit, it is not necessary to starve yourself. It will be much more effective to exclude fatty, fried, spicy foods, alcohol, fast food and convenience foods throughout the week. Good luck and don't get sick!
Gleb Hertsin has already given a good answer, so I see no point in repeating his words, but I will add some clarifications about the interpretation of scientific research by proponents of specific practices such as fasting.
The benefits of fasting are a highly contrived concept based on incorrect findings from research. Proponents of this practice, after Yoshinori Osumi won the Nobel Prize in 2016, now very often refer to this fact, like Andrei Petrov in his answer, but they do not mention that the original studies and reviews did not say that fasting is good. These yellow headlines have started to appear in newspapers like Komsomolskaya Pravda and are based on wrong conclusions. Usually the meaning of these articles boils down to the following rhetoric: "Autophagy is the process of utilizing unnecessary parts of the cell and cellular" debris ", which is stimulated by a lack of nutrients, and therefore it is good to starve!" This is a monstrous simplification, which does not convey the meaning of the research.
For those who want to understand in more detail, I will leave two articles dedicated to the Nobel Prize and a link to an interesting video on the topic from Boris Tsatsulin:
https://postnauka.ru/ faq / 69060
https://www.youtube.com/watch?v=jHHZVyh9TWc&ab_channel=%D0%91%D0%BE%D1%80%D0%B8%D1%81%D0%A6 % D0% B0% D1% 86% D1% 83% D0% BB% D0% B8% D0% BD
There is a tendency that advocates of fasting, veganism, raw food, healthy lifestyle and other concepts like to make loud conclusions based on their conclusions, while not subjecting their ideas to criticism and choosing only the data they need.
everyone is right at the same time, but wrong in their categoricality.
A good method of hunger is on water with honey. The nervous system half-slips glucose, and the rest of the tissues are rebuilt.
Itself 10 days passed this year.
Of course, I was still preparing before this month - I went in for sports, tied up with all bad habits.
I did it according to the training manual of one competent Kiev doctor. Write in a personal, I will share.
After my tastes changed, my mood improved, I began to consume less, but more energetically.
Specifically about the question - one day is the norm, quite. Pure on the water. It will give the body time to rest from the overactive metabolism.
In fact, for the proof of the benefits of fasting and the study of this process "Autophagy" was awarded the Nobel Prize in Medicine.
The bottom line is that by exposing the body to stress, we train it. The same sport of training - we stress muscles and they grow.
And when fasting and cutting back on carbohydrates, the body has no choice but to eat fat and artifacts, accumulated garbage for conversion into energy.
Any religion contains direct or indirect reference to fasting or fasting. And you know what? All these raw foodists and yogis were partly right!
Google. You don't have to be retrograde like the first commentator and people who liked him.
The answer is not entirely relevant, but indirect. I can not name the source, but I read studies where the degree of deterioration of the body was measured in two men of the same age, while one of them was plump, and the other was practicing fasting. Surprisingly, the one who was starving had a very young body and generally healthy. But the lover of good food had a number of disorders in the body, and the internal organs were much more worn out. Fasting, of course, is not a panacea. But personally, I don't see anything wrong with that.
Only I beg you, it is better not to do it yourself! If you have a good local therapist, consult him. For later, if you do not log out and in correctly, very serious health problems can begin.
It should be noted right away that in science there are no such concepts as "cleansing the body" from "toxins" and "toxins", "medical fasting". "Fasting Day" is another delirium from lovers of anti-scientific alternative physiology.
Your liver has a daily supply of carbohydrates. It’s your mouth that is starving, but your body is not. There is no particular harm in daily fasting on water, however, there is no benefit either.
But then the blood sugar level immediately and sharply drops, and you do not provide it, so you can say goodbye to part of your brain, because nervous cells are deprived of their nutrition. Further - all the other consequences.
So where do all these "slags and toxins" described above come from? The point is that they do not exist BEFORE, but appear directly DURING starvation, as a by-product of processes of obtaining energy (glucose) in large quantities from the tissues of the body, unusual for the body. And they have nothing to do with contamination of the body.
This mistake gives rise to the idea that in the process of prolonged starvation, the cells are cleared of toxins. It's a delusion. The human body never accumulates metabolic products in cells, that is, slags, they immediately pass into the bloodstream and are removed by liver or kidney cells. At the same time, the amazing constancy of the internal environment of the body is maintained, the systems responsible for this process have a large margin of safety. As a result, even significant deviations in nutrition do not lead to noticeable changes in the chemical composition of the cell. Therefore, fasting does not cleanse the body of toxins for the simple reason that they do not exist.
Even if you think that fasting will bring you more benefit than harm, do not rush. To get started, consult with your doctor who treats your chronic conditions (if any). If you are practically healthy, then visit a nutritionist, or preferably several (after all, in this case, you can make your own idea about fasting). Either way, eating a healthy diet is much better than fasting.
There are many methods of therapeutic fasting, including one-day. It is not harmful. In many nutritional practices this is called "fasting". They say it helps to relieve the body and give your digestive tract a rest. Just remember that you don't need to eat heavy food in the evening, but rather switch to light foods in a couple of days. Also, after a day of fasting, it is best to start the day with liquid food and switch to solid food in a day or two. I haven't tried it myself, unfortunately it doesn't work out for me, but I hear only positive feedback from many.