What’s wrong with waking up after 4 hours of sleep every day?

Sleeping 4 hours a day and waking up belongs to sleep disorder, the formation of the reasons may be more: first, may be due to the patient’s long irregular life, resulting in biological clock disorders caused by, for example, the patient appears to stay up late for a long time, shift night work and other work, the formation of neurological disorders will cause. The second aspect, to consider may be caused by psychosomatic factors, such as patients have anxiety, depression, often accompanied by sleep disorders, manifested as early awakening, waking up after the difficulty to fall back to sleep, sleep time is significantly shortened. This situation is very unfavorable for the patient’s body, because the normal adult sleep should be guaranteed about 6-8 hours, if the patient falls asleep faster and the depth of sleep is sufficient, the patient’s energy can be fully restored after 6 hours of sleep, but the daily sleep time should not be less than 6 hours.