Sleep is a complex process. During sleep, a person will enter a period of slow wave sleep followed by a period of rapid eye movement sleep, thus forming a sleep cycle, with about 4-6 such sleep cycles overnight. When people wake up, sometimes they feel well restored, and sometimes they feel more tired than before they went to sleep. This is the result of the different depths and states of sleep. Some people sleep for a shorter period of time, but deep sleep is longer, and deep sleep is the best period for the body to repair itself, and deep sleep usually occurs at 12:00 at night, to 2:00 in the morning. Therefore, in order to ensure the quality of sleeping eyes, you should fall asleep before 11:00 p.m. Women “women’s beauty is to sleep out”, I’m sure we’ve all heard that sleep and beauty do have a close connection. We often see that some women who have passed their prime, still have a light body, rosy cheeks, moist skin and charm. While some young women in their early 30s, but the face is obscure, dark circles under the eyes do not recede, the skin wrinkled, depressed. Although the nutritional status of the two, work environment, family life are not similar, but the skin appearance, health status is very different. An important reason for such a big difference is sleep. Usually, women who sleep well look good, while women who have insomnia look dull and depressed, and even have hormonal imbalance, resulting in low immunity and endocrine disruption. Long-term insomnia not only affects a woman’s appearance, but also causes other physical and psychological disorders. Lack of sleep can easily lead to fatigue, lack of concentration and affect work efficiency. Sleep deprivation also makes people gain weight. A study done among 70,000 women found that those who slept 5-6 hours a day were on average 6-8 pounds heavier than those who slept 7-8 hours a day. When normal sleep time is deprived, the body produces large amounts of anti-stress hormones to slow down the metabolism, as well as an increased appetite the next day. This condition tends to make people lose their ability to feel hunger and satiety acutely, contributing to weight gain and increasing the risk of diabetes. An important trigger for insomnia: stress factors. Women are more emotionally delicate and face a great deal of stress from excessive attention from individuals, couples, and other family members during IVF-ET treatment. Therefore, it is important to adjust your mindset appropriately. Men Currently, poor semen liquefaction and high semen viscosity are among the most important factors leading to male infertility. Some of these patients can be cured after targeted treatment. However, there are a few patients who, in spite of carefully following the medical advice and trying to avoid all the bad habits that may cause the disorder, still have the results of the laboratory tests that the semen is not liquefied. In fact, this is because they ignore the effect of sleep on semen. So why does sleep affect the liquefaction of semen? This is because the enzymes related to liquefaction mainly come from the glandular fluid secreted by the prostate and seminal vesicles, and the secretion of these glands is regulated by human endocrine hormones, which are also closely related to sleep. Insufficient sleep, especially too little sleep at night, will cause hormone secretion disorders, resulting in the liquefaction of semen dysfunction, affecting fertility. According to Chinese medicine, lack of sleep at night can cause the body’s yin and yang qi and blood to be out of balance, with the yang energy laboring outside and the yin blood not being able to guard inside, resulting in yin deficiency and internal heat, depleting the body’s fluids and causing the semen to become sticky, resulting in poor semen liquefaction. As some patients do not pay attention to the impact of sleep on semen, it often leads to recurrence of the disease, prolonging the healing time, thus bringing unnecessary losses to themselves economically and mentally. Men should take care of their own health, pay attention to their diet, and get enough sleep, which is good for their health and reproduction.