The strength of immunity depends on many factors, such as heredity, lifestyle and environment. Some people are born with strong immunity, while others need to improve their immunity through a healthy lifestyle and diet.
Maintaining a healthy immune system can help us fight diseases, including colds, flu, pneumonia and so on. It can also help prevent and treat many diseases, such as cancer and autoimmune diseases.
Therefore, we need to take some measures to maintain and improve immunity, such as a balanced diet, moderate exercise, adequate sleep, and reducing stress. In addition, vaccination can also enhance immunity and prevent certain diseases.
In a word, immunity is an important part of human health, and we should pay attention to and take measures to improve immunity and protect our health.