Immunity is the body’s own defense system, equivalent to our country’s “national defense force”, the immune system is “monitoring our body every moment to defend against foreign enemies”. The immune system is constantly “monitoring our body and defending against external enemies”. A decline in immunity can easily make people “weak” and “colds” will become a “regular” in life; and there are many reasons for low immunity, such as lack of sleep, poor emotions, excessive stress, unbalanced diet, etc. Share the following practical post for you to quickly improve your immune system.