If an adult sleeps for more than nine hours, it is considered as extra sleep. Excessive sleep is considered a disease in medicine and has a name. The name is "hypersomnia". People who want to get more sleep even after passing the ideal sleep time of the day are considered to have this disease. Those who have this hypersomnia have several symptoms. Such as - * Anxiety about something * Lack of energy in the body * Weakness of memory These are the causes of insomnia , which forces us to sleep extra. Many also experience shortness of breath during sleep , which often creates the need for extra sleep. However, due to temporary illness, one gets too much sleep. In this case, the body needs to be healed and this need for extra sleep is eliminated.