The so-called healthy and reasonable diet includes the following aspects:

The first is a comprehensive balance, that is, eating everything, not being picky about food or being partial to food. As we all know, no single natural food can provide all the nutrients needed by the human body. Therefore, a reasonable diet must consist of a variety of foods in order to achieve the goal of balanced diet.

According to its ingredients, foods can be divided into five categories:

The first category is cereals and potatoes, which mainly provide carbohydrates, protein and B vitamins, and are the main sources of heat energy for China's diet.

The second category is animal food, such as meat, poultry, eggs, fish, milk, etc., which mainly provides protein, fat, minerals, vitamins A and B and essential fatty acids.

The third category is soybean and its products, which mainly provide protein, fat, cellulose, minerals and B vitamins.

the fourth category is vegetables and fruits, which mainly provide cellulose, minerals, vitamin c and carotene.

the fifth category is pure heat energy food, including animal and vegetable fats, various edible sugars and alcohol, which mainly provide heat energy and essential fatty acids.

Four benefits of a healthy and nutritious diet

① Regular exercise can enhance the cardiopulmonary function, make the heart contract and rise, increase the heart beat and reduce the number of heart beats; Increase vital capacity, increase gas exchange between lungs and tissues, and promote the discharge of carbon dioxide.

② It can reduce the cholesterol content in blood and increase the high lipoprotein cholesterol content in blood. This substance can remove the fat and cholesterol deposited in blood vessels, thus preventing arteriosclerosis, coronary heart disease, hypertension and stroke, and delaying the aging of cardiovascular system.

③ It can improve the function of nervous system, enhance memory, improve the flexibility of body response, keep the elderly energetic, and improve their physiological self-care ability and work efficiency.

④ It can enhance the immune function of human body, enhance the adaptability of the body to adverse environmental factors such as cold and high temperature, and improve the body's resistance to various diseases.