The cause of sleepiness in the morning is not only due to lack of sleep. There are various things that can make the body still feel sleepy in the morning, even though you have slept all night. The reason could be due to sleep disorders, side effects of drugs, alcohol consumption, to certain diseases. Drowsiness can cause concentration to decrease, alertness decreases, and not infrequently, makes us easy to forget. Of course this will have an impact on activities and productivity while working or at school. Causes Sleepiness in the Morning In order not to feel sleepy often in the morning, know in advance the following various causes: 1. Lack of sleep One of the most common causes of sleepiness in the morning is lack of sleep. Lack of sleep due to doing work or just staying up late, can cause someone to feel sleepy and tired all day. Therefore, the recommended duration of sleep is very important. Recommended sleep time for adults is 7-9 hours every night. 2. The body's natur...