Sleepy during the day but unable to sleep at night is a sign of sleep rhythm disorder, which is also a type of insomnia. Most insomnia is related to mental and psychological factors such as overwork, nervousness, anxiety or overexcitement during the day, and taking stimulating foods and drugs can also cause this condition to appear. To change this situation, you need to improve the quality of sleep at night, so that the brain can get sufficient rest, so that you can be energetic during the day. First of all, eliminate the tension caused by insomnia, try not to contact alcohol and coffee and other stimulating drinks, listen to soothing music to relax before bed, hot water foot bath, head massage, etc. to relax the body to improve the quality of sleep, you can also drink hot milk before bed to calm the mind. If the sleep is still bad, you can also take drugs to improve sleep under the guidance of a doctor.