Sleep Health in Traditional Chinese Medicine
One of the classic works on TCM health preservation, "The Three Essentials of Health Preservation," states: “Sound sleep is the greatest joy in life. Ancient people said: ‘Do not seek elixirs, but seek the art of sleeping.’ After a good night’s sleep, one awakens refreshed and alert—truly comparable to an immortal.” Clearly, sleep is of utmost importance to human beings. Throughout life, approximately one-third of our time is spent lying on a pillow. Sleep and health are lifelong companions. Traditional Chinese medicine has always emphasized sleep science, believing that “sleep and diet are essential for health preservation,” and “those who can sleep well can eat well and live long.” American researchers studied 7,000 people over 5.5 years and concluded that seven factors influence lifespan, among which sleep plays a crucial role. It is well known that humans can survive seven days without food if they drink water, but true sleep deprivation for seven consecutive nights poses a threat to life. A physiologist experimented on dogs: giving only water but no food, they survived 25 days; however, continuous sleep deprivation for five days caused a drop in body temperature by 4–5°C, and after another 92–143 hours without sleep, the dogs died. Autopsies revealed significant morphological changes in the central nervous system. Clearly, prolonged sleeplessness inevitably leads to exhaustion—a conclusion entirely logical.
Even short-term sleep deprivation harms health greatly. Among all rest methods, sleep is the most ideal and complete form of rest. Some say sleep is nature’s remarkable restorative agent—this is factual. After a good night’s sleep, most people wake up feeling mentally refreshed and physically energized. In daily life, many experience fatigue, lethargy, dizziness, and poor concentration when sleep-deprived, but these symptoms vanish after a good night’s rest. One analogy describes sleep as charging a battery—“energy storage.” Indeed, sleep replenishes energy depleted during the day, restoring vitality for the next day’s activities. Scientific research confirms that good sleep eliminates physical fatigue, allows brain nerves, endocrine systems, metabolism, cardiovascular function, digestion, and respiration to recover, promotes tissue growth and repair, enhances immune function, and improves resistance to disease. Hence, the saying “sleep is nature’s tonic.”