The main reason for sleepiness during the day and sleeplessness at night is because the correct sleep rhythm is broken and the quality of sleep is not high. First, you need to adjust the biological clock as much as possible to ensure effective sleep, mainly including do not play cell phones before going to bed, otherwise it will lead to more dreams at night, sleep difficulties, etc. Second, sleepy during the day, you can rest properly, but do not make up for too long, otherwise the biological clock disorder at night more unable to sleep. Third, the work is stressful, to properly debug the mood. Fourth, some people eat too much dinner or before bedtime, resulting in a heavy gastrointestinal burden, the need for digestion at night, the brain will be active sleep, so do not eat too much before bedtime.