Trouble falling asleep or staying asleep—commonly termed insomnia—plagues on in three American adults. If you have ever suffered from insomnia, you know how it can disturb your waking, as well as your sleep, hours. It can make you feel fatigued during the day or have trouble focusing on tasks.

Looking at both the day and the night effects of insomnia can help you and your healthcare professional understand the causes and treat the disorder. More research into psychological, lifestyle, environmental, and physical/psychiatric factors behind sleep disorders is making it possible for healthcare professionals to help most troubled sleepers.