Recently, medical researchers have confirmed that turning on the light when sleeping will inhibit the secretion of melatonin, which will reduce human immune function. The incidence of cancer is twice as high as that of normal people, such as flight attendants, telecommunications, nurses and so on. An epidemiological survey conducted by scientists on flight attendants in the United States, Finland and Denmark shows that after nearly 15 years of working on the plane, the incidence of breast cancer has doubled, and about one in 1 senior flight attendants has breast cancer. Another scholar studied more than 2 adults, and found that as long as they slept under the light from 3 am to 7 am once, their immune ability would be significantly reduced. Therefore, from a safer standpoint, people should avoid reversing day and night and changing the habit of turning on the lights at night. Medical scientists have further discovered that electrical appliances with transformers should be kept as far away from the bedside as possible, such as bedside stereo, alarm clock, dimming table lamp, charger and so on. Because the electric waves of these appliances are too close to the human body for a long time, close contact can easily change the hormone secretion of the human body. In view of this, experts believe that it is safer to use these appliances 3 cm away from the bedside. Researchers have found that one of the functions of the pineal gland in the human brain is to secrete a large amount of melatonin when the human body goes to sleep at night. The secretion of melatonin can inhibit the excitability of human sympathetic nerve, reduce blood pressure, slow down the heart rate, make the heart breathe, strengthen the immune function of the body, restore the body, and even have the effect of poisoning cancer cells. However, the pineal gland has one of the biggest characteristics: as soon as the eyeball sees the light source, melatonin will be inhibited and ordered to stop secretion. Once the light is turned on and you get up frequently at night, the secretion of melatonin will be suppressed to a greater or lesser extent, which will indirectly affect the human immune function. If people live in an upside-down environment for a long time, their natural immune function will decline. Therefore, after the night shift falls asleep during the day, it is necessary to adjust the indoor light to the darkest limit as far as possible, so that the pineal gland in the brain can secrete enough melatonin to ensure the normal needs of the human body and make the tired body recover as soon as possible. .................................................... research report shows that if you sleep in a dark room before the age of 2, the proportion of myopia is 1%; If you sleep in nightlight's room before the age of 2, the proportion of myopia is 34%; If you sleep in a room with headlights on before the age of 2, the proportion of myopia is 55%. Myopia hides the potential risk of blindness. If you don't pay attention to it properly, you will be in danger of retinal detachment, glaucoma and blindness. In the past, the short reading distance and the extensive use of TV and computer were usually blamed for myopia. However, the researchers pointed out that if we can consider the brightness of the sleeping light source, we can know that the higher the level of civilization, the correct indoor and outdoor choices and methods are beneficial to physical and mental health. I suggest you don't use earplugs, but use earphones, because you listen while sleeping, so don't turn up the volume. Music has a definite therapeutic effect on people's body and mind. According to the research, the unique melody and rhythm of some music can lower people's blood pressure, slow down the speed of basic metabolism and breathing, and make people's physiological response mild when they are under pressure. It is not new for western countries to combine music with medical system and widely apply it to various psychological and physiological treatments. The therapeutic function of music, on the other hand, directly produces a * * * vibration effect on internal organs through the physical function of music. Because sound is a kind of vibration, and the human body itself is composed of many vibration systems, such as the beating of the heart, gastrointestinal peristalsis, brain wave fluctuations and so on. When you hear the vibration produced by music and the vibration of internal organs, it will make the human body secrete a physiologically active substance, regulate blood flow and nerves, and make people full of vitality and vigor. In addition, music has an active and positive function, which is a way to improve creativity and thinking, make the right brain flexible, and can guide important alpha brain waves. The unique music rhythm and melody can make our left brain, which is usually in charge of language, analysis and reasoning, rest; In contrast, it stimulates the right brain, which is in charge of emotions, creativity and imagination, and has a strong effect on improving the potential abilities such as creativity and information absorption. In the early 19th century, music has been used to promote patients' sleep. Doctors pointed out that listening to suitable music for insomnia patients can really reduce the use of sleeping pills and sedatives. The rhythm of music will affect the harmony of human body; Compared with young people, the neoepinephrine in the elderly has increased significantly; This hormone has been confirmed in recent medical research to be related to the occurrence of sleep and the number of waking up at night. The scientific research of music promoting sleep has been confirmed in Germany, the United States and the Soviet Union. The American Medical Review Committee has already announced that most sleeping pills lose their efficacy after two weeks of use by patients. Based on the above reasons, music therapy has been paid more and more attention and has been widely used by medical staff. Although different studies use different music, their music has one thing in common: the beat of music is slightly equal to the rate of human heartbeat. Music that is too fast or too slow is not suitable for promoting sleep; Too fast will make people nervous, too slow will make people feel suspense. Medical experiments have proved that the type of music will affect the blood circulation in the brain, and some concerts will increase the blood volume in the brain and make blood activities smooth; On the contrary, it will slow down the speed of blood circulation and ease the external stimulation. For example, when eating in a restaurant, soft music can make appetite and digestion smooth, and fully enjoy the satisfaction and pleasure of eating. However, dance music with fast melody or marching music with strong rhythm will make you nervous and affect the function of digestive system. Not any sweet music can achieve the effect of improving the soul! According to the research of music psychologists on Virtue Day, it is pointed out that if the music we listen to can't make us feel cordial, it can't achieve the effect of relaxing nerves and relieving stress. The alpha wave in our brain dominates the human body's stable and calm mood. By listening to psychotherapy music often, the alpha wave can be effectively strengthened, which can override other uneasy brain waves and achieve the effect of relaxation of body and mind and stability and peace of mind.