Why does everyone need to eat? Why do people eat, why do people want to eat

There is a saying that "people are iron, rice is steel, and a meal is not hungry", but eating is not only to fill our stomachs, food will also provide all kinds of energy needed by our body, and people's activities are inseparable from these energies, which is like the truth that a car can't run up if there is no gasoline, and if there is no food, there will be no life activities, from childhood to adult's body and various tissues are growing and developing, and the county is constantly updating. This requires a lot of nutrients from food to meet the development and renewal of various human tissues.

Therefore, it is only a superficial phenomenon that people eat to fill their stomachs, and eating is actually to maintain the normal activities of the human body and maintain people's life and health.

Eat to replenish calories and energy, the human body can only live without calories and energy without nutrition, and only by living can we do what we want to do.

Hello! Even trees need food, so people also need to eat.

All living things have to eat.

Eating is a human instinct, and if you don't eat, you will starve to death.

First of all, the people live on food. Only by eating can people have energy and replenish their physical strength.

This is originally a process of human existence, and in many cases, everyone must need to collect energy through the outside world to keep themselves alive. So this is also a relatively normal phenomenon, it is normal, animals also need to eat, after all, natural selection, survival of the fittest.

Why are you asking this question.

If you don't eat, you'll starve, so everyone has to eat.

Be. Be.

Be. You might say that there is nothing to study here, that eating when you are hungry is a very normal and unremarkable thing, and that most countries in the world eat three meals a day.

But why do humans divide food into three meals? Why do people feel hungry when it comes to morning, noon and evening meals? Scientists have done a lot of research and believe that humans, like animals, when to eat is controlled by the body's biological clock, which will allow the message of hunger to be transmitted to the brain.

As for dividing food into three parts, some people believe that it is related to the energy expenditure of the human brain. The energy source of the brain can only be glucose, fat does not work, 110 145 grams of glucose are needed a day.

Glucose is stored in the muscles in the form of glycogen for 120 grams, but it cannot be converted directly into glucose to work, only the part that is converted by the liver. Only 70 grams can be accumulated from food and liver, and only about 50 grams can be accumulated in a meal. Therefore, only the equivalent of this three times the amount can meet the energy expenditure of the brain for a day, so the person must eat three meals a day.

There are also people who believe that food generally stays in the stomach for about 4 hours, and after 4 hours, the stomach is empty, and people will feel hungry, and the interval between three meals a day is exactly 4 to 5 hours, which is also reasonable from the point of view of digestion.

Why do people want to eat, of course, there is a certain reason, if you eat noodles every day, maybe a large part of the people will feel disgusted and disgusted with this noodles, because eat every day, eat noodles for three meals a day, you will be tired, but why people will not eat tired and tired of eating every day, first of all, the rice is very delicious, very soft, very thin, very small grains of rice, rice contains many kinds of vitamins, eating people is of great help to people's body and growth, it is okay to eat 1 bowl or 2 bowls a day, It is best to eat with some vegetables, tomatoes and scrambled eggs, etc., which are very nutritious, rice is also planted by the working people one by one, working in the farmland under the sun, to do the grains are hard, eating can supplement the body's energy, if you don't eat you will feel very weak, the resistance will decrease, long-term food will lead to death, this is very normal, eating can provide a lot of energy, just like drinking water, drink not thirsty, hope!

1. Eat to get nutrition, get energy, and survive.

2. People have to eat every day, and eat nutrients through meals to maintain life. Essential nutrients can be divided into six categories: proteins, carbohydrates (sugars), fats, inorganic salts and trace elements, vitamins, and water. Proteins, fats, and sugars all produce energy to sustain life, and energy is needed to carry out daily tasks.

3. Scientifically speaking, the body is consuming energy all the time to maintain the vitality of the body, and the body's digestive organs - stomach and intestines, if there is not enough food to convert energy, the body will send a signal of energy deficiency, and the purpose of eating is to replenish energy for daily consumption. This is also the reason why people who do manual work eat more than the average person.

4. Three meals a day, the protein digestion and absorption rate in food is 85%; If you change to two meals a day, and eat half of the whole day's food at each meal, the protein digestion and absorption rate is only 75%. Therefore, according to the living habits of our people, generally speaking, three meals a day is still more reasonable. At the same time, it should be noted that the interval between meals should be appropriate, as too long the interval will cause high hunger and affect people's labor and work efficiency.

Because all the activities of the human body need energy. Energy needs to be replenished in food. People don't just want to eat, they want to eat well. Therefore, eating can give people the motivation to work, and returning to things also gives people the motivation to create and transform the world.

The human body needs a lot of nutrients, so we need to replenish the nutrients that our body needs by eating and eating a lot of nutritious things.

This answer will take time to verify, and the reason for fasting for three days is self-evident.

Summary. Hello, dear, after inquiry, people need to eat in order to obtain energy and nutrients, maintain the normal physiological functions and life activities of the body. The energy and nutrients in food feed the body's metabolic activities, including breathing, heartbeat, digestion, and exercise.

Skipping meals or skipping meals for too long can lead to physical exhaustion and death. Therefore, eating is one of the necessary conditions for human survival and health.

Hello, dear, after inquiry, people need to eat in order to obtain energy and nutrients, maintain the normal physiological functions and life activities of the body. The energy and nutrients in food feed the body's metabolic activities, including breathing, heartbeat, digestion, and exercise. Skipping meals or being sleepy for too long can lead to physical failure and death.

Because of this, eating is one of the necessary conditions for human survival and health of Rusen.

Dear, have you ever understood how the internal organs of the human body work?

Hello dear, humans need to eat because food is the main way for the human body to obtain energy and nutrients. The human body needs energy to maintain normal life activities such as breathing, heartbeat, exercise, and many more. The nutrients in food, such as carbohydrate compounds, proteins, fats, vitamins, minerals, etc., can provide the body with the nutrients it needs to maintain the normal functioning of the body.

If you don't eat for a long time, the human body will be malnourished in the sail hall, resulting in various body function problems, and even life-threatening in serious cases. Therefore, eating is one of the basic needs of human survival and an important guarantee for maintaining health.

Hello dear people need to eat in order to obtain energy, nutrients and substances needed for survival to maintain the normal physiological and metabolic functions of the body. The nutrients contained in food, such as carbohydrates, proteins, fats, vitamins and minerals, can be absorbed and utilized by the body to provide the energy and nutrients needed by the body and maintain the normal physiological functions and metabolic processes of the body. In addition, human eating is also related to physiological and psychological factors.

For example, when a person feels hungry, the body produces a substance called ghrelin, which prompts the person to have an increased appetite and search for food. When people enjoy food, they will have a sense of pleasure and satisfaction, which will help relieve stress and fatigue, and improve the body's immunity and disease resistance. In general, people need to eat laughing chain rice in order to maintain the normal physiological and metabolic functions of the body, as well as to meet physical and psychological needs.

At the same time, choosing a healthy, balanced diet and reasonable eating habits can help maintain the health of the body and prevent diseases. I hope the above can help you, I wish you a happy life!

People need to eat because food is the energy and nutrients that our bodies need to sustain life. The nutrients we consume through food, such as carbohydrates, proteins, fats, vitamins and minerals, are necessary for our body to function properly. For example, carbohydrates provide the energy your body needs, proteins are used for cell repair and growth, and fats are important for your body** and help maintain your body's temperature.

Our body needs to consume food regularly to maintain normal physiological function and healthy health. If there is no food for the stool celery peel, the body will have a lack of nutrition, resulting in abnormal body function, a decrease in the ability to avoid jujubes, fatigue and other problems. Therefore, eating is one of the basic needs necessary for human survival.