a sleep of three hours
11Hours of service — The hours of service (HOS) are regulations issued by the Federal Motor Carrier Safety Administration (FMCSA) governing the working hours of anyone operating a commercial motor vehicle (CMV) in the United States for the purpose of interstate… …
12Sleep and creativity — The majority of studies on sleep and creativity have shown that sleep can facilitate insightful behavior and flexible reasoning. On the other hand, a few recent studies have supported a theory of creative insomnia, in which creativity is… …
13Sleep — The body’s rest cycle. Sleep is triggered by a complex group of hormones that are active in the main, and that respond to cues from the body itself and the environment. About 80 percent of sleep is dreamless, and is known as non rapid eye… …
14Polyphasic sleep — Polyphasic sleep, a term coined by early 20th century psychologist J.S. Szymanski,[1] refers to the practice of sleeping multiple times in a 24 hour period usually more than two, in contrast to biphasic sleep (twice per day) or monophasic sleep… …
15Rapid eye movement sleep — (REM) sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM sleep. We typically have 3 to 5 periods of REM sleep per night. They occur at intervals of 1 2 hours and are quite variable in length. An… …
16Delayed sleep phase syndrome — Classification and external resources ICD 10 G47.2 ICD 9 327.31 …
17Canonical hours — Benedictine monks singing Vespers on Holy Saturday. Canonical hours are divisions of time which serve as increments between the prescribed prayers of the daily round. A Book of Hours contains such a set of prayers. In western Catholicism,… …
18Non-24-hour sleep-wake syndrome — Classification and external resources ICD 10 G47.2 ICD 9 327.34 …
19National Three Peaks Challenge — For other uses, see Three Peaks (disambiguation). The National Three Peaks Challenge is a mountain endurance challenge in Great Britain, with a history of over 40 years, in which participants attempt to climb the highest peaks of each of the… …
20Never Sleep Again: The Elm Street Legacy — For the American rock tour headlined by the band Hawthorne Heights, see 2009 Never Sleep Again tour. Never Sleep Again: The Elm Street Legacy DVD cover Directed …
