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A nap is a form of biphasic or polyphasic sleep, where the latter terms also include longer periods of sleep in addition to one period. For years, scientists have been investigating the benefits of napping, including the 30-minute nap as well as sleep durations of 1–2 hours. Performance across a wide range of cognitive processes has been ...
Other aspects of sleep health have been associated with obesity, including daytime napping, sleep timing, the variability of sleep timing, and low sleep efficiency. However, sleep duration is the most-studied for its impact on obesity. [124] Sleep problems have been frequently viewed as a symptom of mental illness rather than a causative factor.
The five-paragraph essay is a format of essay having five paragraphs: one introductory paragraph, three body paragraphs with support and development, and one concluding paragraph. Because of this structure, it is also known as a hamburger essay , one three one , or a three-tier essay .
An outline, also called a hierarchical outline, is a list arranged to show hierarchical relationships and is a type of tree structure. An outline is used [1] to present the main points (in sentences) or topics of a given subject. Each item in an outline may be divided into additional sub-items.
A power nap, also known as a Stage 2 nap, is a short slumber of 20 minutes or less which terminates before the occurrence of deep slow-wave sleep, intended to quickly revitalize the napper. The expression "power nap" was coined by Cornell University social psychologist James Maas. [2] The 20-minute nap increases alertness and motor skills. [2]
It may come with insomnia or major depressive disorder, or indicate other mental disorders. [2] The consequences can negatively affect the health, cognition, energy level and mood of a person and anyone around. It increases the risk of human error, especially with technology. [3]
(Jet lag was previously included as a situational circadian rhythm sleep disorder, but it does not appear in DSM-5, see Diagnostic and Statistical Manual of Mental Disorders for more). Sleep apnea, obstructive sleep apnea, obstruction of the airway during sleep, causing lack of sufficient deep sleep, often accompanied by snoring.
Avoiding excess daytime napping, especially in the afternoon, is also a big part of a schedule that can help maintain regular circadian rhythm. Students with consistent sleeping schedules had better grades on average than students with irregular sleep schedules according to a study conducted by Brigham and Women's Hospital. [ 56 ]