Including meat, milk, eggs, fish, beans and nuts. The high-quality protein provided by these foods is essential for improving the health of immune system. Protein is not afraid of heating. All food must be thoroughly cooked. The amount of rice and vegetables depends on the number of people. Don't eat leftovers!

2. Make sure to eat some fresh vegetables and fruits every day;

Adults should eat at least one catty of fresh vegetables and half a catty of fresh fruits every day, and mix them with fruits and vegetables of various colors. These foods can provide rich nutrients such as vitamin C and improve people's body resistance. Children should give fruit two meals according to their age, and at the same time ensure the amount of fruit to avoid eating too much and affecting the dinner.

3. Drink plenty of water:

Better drink boiled water! Adults should not be less than 1500ML per day, and infants should drink a small amount of water many times. You need to drink water according to your baby's urine and urine. Breast-fed babies within six months do not need to drink water. Breast milk is more than 90% water, so you don't need to drink extra water. Drinking plenty of water will help to eliminate wastes and toxins in the human body in time, increase metabolism, and have many benefits!