Manual workers are mainly engaged in muscle and bone activities. They consume a lot of energy, have high oxygen demand and vigorous substance metabolism. Generally, moderate-intensity manual workers consume 3000~3500 kcal per day, while heavy manual workers need to consume 3600~4000 kcal per day, which is higher than that of mental workers 1000~ 1500 kcal. In addition, some manual workers may be exposed to some harmful substances, such as chemical poisons, harmful dust, high temperature and high humidity. These harmful substances can be eliminated or alleviated to some extent through a reasonable diet. To this end, manual workers should pay attention to the following points when arranging diet:

Staple food. Heat mainly comes from grains and other foods. In order to meet the supply of calories, we must increase the amount of food to get higher calories. The staple food can be matched with coarse grain flour and rice, and renovated to increase appetite and meet the body's demand for calories. Such as jiaozi, steamed buns, sugar pancakes, meat rolls (noodles, minced meat) and so on. Eat more foods with high calories.

Protein's intake of non-staple food should be appropriately increased. protein can not only meet people's physical needs, but also enhance their resistance to various poisons. It is also important for manual workers to eat more food containing protein. For example, people engaged in mercury operations should eat more foods from protein to protect vegetable enzymes containing eggs from mercury. They should eat more tofu or bean products every day, preferably one or two eggs every day, and then eat some meat, fish, milk, soybean milk and so on. , generally can meet the demand. Adequate supply of vitamins and inorganic salts can not only meet the needs of the human body, but also ensure that some special types of workers are not harmed. For example, people who work in high temperature in summer often sweat a lot, and their bodies are prone to lack vitamin C, B vitamins, oxygen and sodium, resulting in nutritional imbalance. So eat more fresh fruits and vegetables, as well as salted eggs, salted side dishes, salted soda and so on. Supplement vitamin C, B vitamins, oxygen and sodium. In order to prevent lead poisoning, people engaged in lead operations need to supplement vitamin C, and they need to supplement about 150 mg every day. Fresh vegetables and fruits should be added to the diet, and a diet with low calcium and normal phosphorus should be provided to reduce the accumulation of lead in the body.