8 Facts About InsomniaInsomnia is a common sleep problem that can wreak havoc on your daily life. Lack of sleep can leave you feeling tired and unfocused and even lead to anxiety, depression and irritability.
Many people find that they lie awake for a long time before falling asleep, sleep for short periods of time or lay awake for most of the night. Feeling as if you haven’t slept at all or that you wake up too early are also common signs of insomnia.
National Heart Lung and Blood Institute
— Last Modified: 08/29/2012, First Published: 08/07/2012