Snacks also refer to snacks, which are non-dinner snacks that have been sold in bulk in sealed packages and have a long shelf life and do not need to be cooked again. Most of them are fried, nuts, dried, pickled (including preserved fruits and preserves), baked or fried, candy, puffed, etc., but the common concepts in Chinese do not include cake and bread, ice cream and soda water. It's no use eating more snacks. Choose healthy snacks when buying snacks. Under normal circumstances, people can meet their physiological needs for nutrients through three meals a day, and there is no need to eat snacks. But in some special cases, eating some snacks will be good for your health. [1] Here are some examples to illustrate: the elderly. Eating some snacks properly is good for your health. Why? Because the digestive system function of the elderly decreases, such as the decrease of gastric juice secretion and digestive enzyme secretion, the digestive absorption function decreases to some extent. In this case, if you still eat three meals a day, you can't meet the needs of the elderly for nutrients. Due to the decline of digestive function, it is difficult to digest and absorb every meal for a while, which brings more burden to the gastrointestinal tract and often causes symptoms of indigestion. If you eat 70% to 80% full every meal and feel hungry between meals, eating a little digestible and nutritious snacks can not only ensure the normal nutritional needs of the elderly, but also not cause excessive burden to the gastrointestinal tract. One way to overcome the temptation of delicious food is to make sure that they don't appear where you can reach them. Think about it, if your desk, cupboard, desk drawer or other places are full of sweets, chocolates and biscuits … then you should always be ready to fight your desires. Don't forget to buy some carrots, cheese, nuts, fresh fruit, applesauce, yogurt and graham crackers when shopping. Putting these healthy and light snacks around you can prevent you from losing control of your mouth for a period of time. Another part of the motivation to eat comes from the habit of eating snacks that you have developed. When you are not hungry, you will especially want to eat a chocolate cake or a cup of strawberries. So you should try to find your weaknesses. Ask yourself: "Under what circumstances would I particularly like to eat?" Snacks are the favorite of many women. They will be eaten when they are happy and when they are unhappy. Why is it so amazing? Psychologists believe that in nature, the mechanism of eating snacks and self-touching behavior is the same. The purpose of eating snacks is not only to meet the needs of hunger, but also to relieve tension and eliminate inner conflicts. When food comes into contact with the oral skin, on the one hand, it can transmit sensory information to the brain center through the skin nerve, resulting in a sense of comfort, so that people can eliminate their inner loneliness through contact with external objects; On the other hand, when the mouth touches food and chews and swallows, it can shift people's attention to tension and anxiety, and create another exciting area in the eating center of the brain, thus inhibiting tension and excitement and finally relaxing. It's not easy to sit in a boring office for seven or eight hours. Besides, you have to think, so in order to reduce work pressure or think quickly, your brain needs to be nourished in time, and those snacks in the drawer can play a role. Rich in nutrition and relatively low in sugar and fat, it is an ideal snack for daily consumption. For example, low-fat cheese, biscuits containing crude fiber or ordinary chocolate biscuits, and eating less sweet bread and sandwiches. If you are not very hungry, dried fruits such as raisins, preserved apricots and figs are also good choices. In addition, there are apple slices or banana slices. These foods taste fragrant and crisp, but they are not fried, but baked at high temperature to dry the water in the fruit, which not only has less nutritional loss, but also has lower fat and calories, and eating more will not lead to obesity. The nutrients needed by the human body are mainly obtained through three meals a day, and snacks can only be used as a supplement. Therefore, snacks can't be eaten without restraint. They are eaten while walking, doing homework, watching TV and chatting. Eating snacks in this way not only affects dinner, but even replaces dinner with snacks.

As we know, the work of human digestive system is regular. When eating a certain amount of food, the stomach will feel full. At this point, we will no longer have a desire for food. After a period of time (usually 2~4 hours), the food in the stomach is basically emptied, the gastrointestinal tract will accelerate peristalsis, and the secretion of gastric juice, intestinal juice and bile will also accelerate, which sends a signal to the brain that I am hungry. At this time, people will feel hungry and we need to eat. But for those children who don't leave snacks, food keeps entering their stomachs and can't be emptied. In this way, when they have dinner, they will lose their appetite and eat little or nothing. Because they ate too little for dinner, they will soon feel hungry again, so they will eat snacks again. Over time, the normal working rhythm of human digestive system is destroyed and the digestive function is disordered, which will inevitably affect their health.