polyphasic sleep

In polyphasic sleep, an organism sleeps at multiple times during a 24-hour cycle.

Elderly humans often have disturbed sleep, including polyphasic sleep.

The term polyphasic sleep is also currently used by an online community that experiments with alternative sleeping schedules to achieve more time awake each day.

Dymaxion also came to describe a polyphasic sleep schedule he followed, consisting of four 30 minute naps throughout the day.

The book covers over 50 topics, including rapid fat loss, increasing strength, boosting endurance and polyphasic sleep.

Early mammals engaged in polyphasic sleep, dividing sleep into multiple bouts per day.

The circadian rhythm disorder known as irregular sleep-wake syndrome is an example of polyphasic sleep in humans.

Kramer tries polyphasic sleep, also known as Da Vinci sleep.

In the 1920s, Fuller experimented with polyphasic sleep, which he called Dymaxion sleep.

Despite only practising true polyphasic sleep for a period during the 1920s, Fuller was known for his stamina throughout his life.

Polyphasic sleep is common in many animals, and is believed to be the ancestral sleep state for mammals, although simians are monophasic.

"The Friar's Club" - Kramer's experiment with polyphasic sleep causes him to fall asleep during a make-out session.

Under experimental conditions, humans tend to alternate more frequently between sleep and wakefulness (i.e., exhibit more polyphasic sleep) if they have nothing better to do.

In August 2006, he agreed to take part in a polyphasic sleep experiment presented on BBC One's The One Show.

Critics of polyphasic sleep dispute the notion that the human brain can simply be classically conditioned to tolerate a state of near constant wakefulness without deleterious effects.

An example of polyphasic sleep is found in patients with irregular sleep-wake syndrome, a circadian rhythm sleep disorder which usually is caused by head injury or dementia.

In 1989 he published results of a field study in the journal Work & Stress, concluding that "polyphasic sleep strategies improve prolonged sustained performance" under continuous work situations.

The innocent, ingrained obedience of the Athsheans and the fact that they never seem to sleep makes them seem to be ideal slaves, practicing what in humans is called polyphasic sleep.

Polyphasic sleep is 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 (once per day).

Higher daily sleep quotas and shorter sleep cycles in polyphasic species as compared to monophasic species, suggest that polyphasic sleep may be a less efficient means of attaining sleep's benefits.

Stampi became interested in chronobiology in younger years when he noticed that a number of his fellow long distance sail boat racing comrades adopted a systematic polyphasic sleep pattern with minimal impairment.

While many claim that polyphasic sleep was widely used by some polymaths and prominent people such as Leonardo da Vinci, Napoleon, or Nikola Tesla, there are few reliable sources supporting that view.

Polyphasic sleep is claimed to be of particular benefit in cases where very long periods of wakefulness (+24 hours) are necessary and a normal circadian rhythm is impossible (such as certain cases of military duty or emergency service).

Woźniak further claims to have scanned the blogs of polyphasic sleepers and found that they have to choose an "engaging activity" again and again just to stay awake and that polyphasic sleep does not improve one's learning ability or creativity.

Phasing of sleep describes how sleep is distributed across a daily cycle: polyphasic sleep consists of multiple bouts of sleep in a 24-hour period, while monophasic sleep consists of a single bout of sleep in a 24-hour period.