Let the heart calm down. Modern people like a busy life, and their daily schedules are full, for fear of loneliness. In fact, this impetuous life is extremely harmful to health. Huangdi Neijing said: "Nothing is indifferent, the true qi follows, the spirit is hidden inside, and the disease is always safe." When people are quiet, they can reduce a lot of unnecessary consumption, especially the consumption of "qi", and realize "energy saving" in the body, thus preventing diseases and prolonging life. We might as well slow down the pace of life and take the form of sitting quietly, closing our eyes and relaxing.