In the course of many years of consultation, we have seen too many insomnia patients. Patients generally do not think seriously about the causes of their insomnia, and do not come to the clinic until they cannot fall asleep at will. Not understanding the causes not only makes treatment difficult, but also has a great impact on the recovery of sleep afterwards. 1.When to fall asleep? Before 10pm, some people say “too early” and “impossible”. Deep sleep generally starts at 10 pm and ends at 3-4 pm the next day. If you fall asleep at 12-1 pm, you will have lost most of your sweet sleep, and even if you sleep until noon the next day, it will be garbage sleep. So excessive Internet, bedtime chat, night singing karaoke, can lead to future sleep disorders. 2, shift night shift? Some people are not suitable for night shift, the body can try to adapt in the first few years, but after 2-3 years, there will be difficulties to sleep, women’s menstruation, pregnancy will be affected. 3, exercise before bed can help sleep? Some people get more excited the more they exercise, to look at their body type. Some people play ball at night, fitness, very tired, muscle excitement, the same difficult to sleep. So my sleep I can not make the decision, to follow the climate due to nature, in line with the daily circadian pattern, deny health will receive damage day by day. Love yourself, start from loving your sleep.