Waking up in the middle of the night
Some people also face the problems of getting irregular sleep, in which after trying so hard when they fall asleep, they wake up, eventually. Some insomniac patients are not able to maintain their sleep and wake up on and off during the night; this a clear symptom of sleep maintenance disorder. They are not able to get the deep sleep or sleep wave, which makes them less productive during the day. The refreshing sensation that one gets after a night of deep sleep is not for the people with sleep maintenance disorder. Once the sleep gets disturbed, then it becomes challenging for a person to fall asleep again. Waking up in the middle of the night might happen temporarily to those people who drink caffeine just before going to bed.