? The definition of health by the World Health Organization: "Health is a state of perfect body and mind and good adaptability, not just a state without disease and weakness." This is what people call physical and mental health, that is, a person is completely healthy if he is sound in four aspects: physical health, mental health, good social adaptation and moral health.
In order to stay alert when diseases invade the body, people must first understand the signs of health. Any sign of deviation from these signs means an alarm. This paper expounds some signs of health. A healthy body has these standards: first, it must have strong resistance, healthy people are not easy to get sick, and have strong tolerance and resistance to the pathogenic factors of epidemics; Its resilience is very strong, once infected with the disease, it can use its own immune system to recover quickly; Cheerful and energetic, healthy people are always cheerful, energetic, motivated and enterprising; Body temperature, heart rate, breathing and weight are normal (the body should not be too fat or too thin); Strong appetite and normal digestive function; Healthy gums and oral mucosa; The skin is smooth, flexible, elastic and healthy; Smooth and shiny hair, tightly attached to the scalp; Strong, reddish nails are not easy to break or too hard, and nails are also an important factor in reflecting the figure. ?
? In order to get a healthy body, people must take appropriate measures, actively implement them, and persevere, such as a proper and balanced diet to provide the energy needed by the human body, grow new tissues, repair damaged tissues, and keep the human body in good working condition; Doing enough physical exercise can promote muscle growth, blood circulation and appetite, in addition, it also helps the human body to absorb and utilize nutrients in food; Keeping an optimistic spirit and a peaceful mind, mental health can delay aging and enhance immunity.