Healthy lifestyle, short composition.

For any organism, health is a dynamic balance. This is a state of balance: energy and matter are evenly input and output (even allowed to grow). Health also means the expectation of continuing to live. For emotional animals, such as humans, health has a broader concept. Health and unhealthy are not absolute opposites, but a relative transitional state. The Constitution of the World Health Organization defines health as: "Health is not only the elimination of disease or weakness, but also complete physical, psychological and social health."

Health belongs to the medical field, and its core is environmental health, nutrition, disease prevention and public health affairs. People can investigate these aspects to help assess health. In some countries, health includes the management of physical condition after meeting more basic food, shelter and basic medical security. Many of these practices are in pursuit of happiness. In fact, they are committed to controlling the side effects of affluence. Since the middle class appeared in the industrialized world in the late19th century, the concept of health has gradually become popular in western countries. Since then, a new and prosperous public has time and resources to pursue happiness and other forms of self-improvement. Many early consumer goods, from cornflakes to mouthwash, originated from the growing public interest in health. Health can be maintained through scientific tests or practices, such as checking cholesterol, blood pressure and glucose. It also contains some controversial practices, such as avoiding certain foods, injecting certain vitamins or changing drugs. The subjectivity of health can be illustrated by a hypothetical example: someone eats selectively to avoid food additives prolonging life, and he doesn't care about driving hundreds of miles. However, statistics show that the death rate or accident rate caused by driving is far greater than the risk of eating food with additives. But people think that avoiding certain foods or additives can make them feel "healthy", while avoiding driving is just inconvenient. The pursuit of health can improve health through the placebo effect, although the technology used has not been scientifically confirmed. Some people who feel good about themselves may relieve psychological pressure, improve their perception of health and achieve an improved psychological state. This state has some proven beneficial effects on different systems of the body: for example, blood pressure, gastrointestinal function and immune response.

Health comes from healthy living habits, and health needs an optimistic and cheerful attitude towards life.