Lack of sleep; inability to sleep, especially when chronic; wakefulness; sleeplessness.

not being able to sleep.

Difficulty initiating or maintaining sleep.

is a sleep disorder referring to the problem of not being able to fall asleep or the problem of waking up too early. Everyone experiences periods of insomnia in his or her life. If the periods are prolonged and you feel daytime sleepiness, it is recommended that you consult a physician.

Recommendation GHB (Gamma-Hydroxybutyrate)"...Some have called this pattern the “dawn effect” and have speculated that it is related to the release of stored dopamine..."

Recommendation Magnesium"Because of its nerve and muscle support, magnesium may also be helpful for insomnia..."

Recommendation Melatonin"...The pineal gland - a tiny gland at the base of the brain - makes serotonin and then turns it into melatonin when light decreases..."

Insomnia is a 2002 American remake of a 1997 Norwegian film about a police officer investigating a murder above the Arctic Circle and suffering insomnia due to the midnight sun and his guilt over past and present misdeeds. The film was directed by Christopher Nolan (fresh from the success of his previous film, Memento) and starred Al Pacino, Robin Williams and Hilary Swank.

Insomnia was the second single released from British rock band Feeder's 1999 album "Yesterday Went Too Soon". It reached #22 in the UK charts and was at the time Feeder's 4th consecutive single to reach the Top 40.

Insomnia is the soundtrack album for the 1997 Norwegian film Insomnia, which was composed by ambient artist Biosphere.