In the process of metabolism, all kinds of physiological functions need the adjustment of God. Therefore, God is easily hurt and damaged. Therefore, conditioning is particularly important. In Su Wen's "Pathogenesis Qi Help Collection", he pointed out: "If God uses more, he will work hard and hide it in his heart." The so-called "quiet rest" mainly refers to quiet without thinking, raising without using, not only using God, but also preventing excessive use of God. Su Wen Bi Lun said: "Silence hides the gods, impatience leads to death", which is also the meaning. Silence is nothing to think about, God is useless, and a clean body and mind helps to maintain a quiet air. On the contrary, excessive use and fidgeting are often easy to hurt your body and affect your health. Therefore, Su Wen's ancient naive theory says: "Keep the spirit inside and stay away from the disease", which emphasizes the health care significance of quietness and nourishing the soul.