The most important purpose of life is to maintain the balance of yin and yang, which is the foundation of life. If yin and yang are balanced, then our human body will be healthy. If yin and yang are out of balance, then we will get sick, premature aging and even die. So how do we keep the balance of Yin and Yang in our life? We know that people's life reserve is limited, and any product, including life, including a person's energy reserve is limited. Then we must make reasonable arrangements. Our life is like a burning candle. The more it burns, the faster it goes out. Therefore, we should pay attention to the problem of energy conservation and health preservation in order to maintain the balance of yin and yang in life. Energy-saving health care includes three magic weapons: static health care, slow health care and low temperature health care. The purpose of our energy conservation and health preservation is to protect yang and yin, avoid unnecessary losses, and thus maintain the balance of yin and yang in life. In addition, life reserve is the basis of maintaining the balance between yin and yang. Life reserve is diet, sleep and sex life. These three instincts are the three elements to increase the life reserve and the main link to maintain the balance of yin and yang in the body. First of all, we look at food health, which is the nutrition of life. Food health is to maintain the balance of yin and yang of life through reinforcing and reducing. Besides diet, it is sleep. Sleep, health care, fee-based living. The purpose of our sleep is to achieve the reserve of life cultivation by adjusting the balance of yin and yang, so we advocate sleeping at noon. Third, it is sexual health care. Sexual health care is the coordination of life. The great significance of sexual health care lies in coordinating the balance between yin and yang. If the balance between yin and yang is good, it can slow down aging and prolong life. Therefore, slow health, quiet health and low temperature health are the energy-saving health of life; Eating healthy, sleeping healthy and sexual health are the reserve health of life. Combining and cooperating with each other is of great significance to maintaining the balance of yin and yang in human body and life. If the yin and yang of these lives are well balanced, then we can live a healthy life.