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Related Experiment Videos

Should we be taking more sleep?

Y Harrison1, J A Horne

  • 1Department of Human Sciences, Loughborough University, Leicestershire, U.K.

Sleep
|December 1, 1995
PubMed
Summary
This summary is machine-generated.

Most individuals are not chronically sleep deprived; they possess the capacity for extended sleep beyond physiological needs. This extra sleep offers minimal benefits to daytime alertness, with naps being a more practical alternative.

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Area of Science:

  • Sleep Science
  • Chronobiology
  • Human Physiology

Background:

  • Previous observations suggested chronic sleep deprivation in the general population based on reduced daytime sleepiness after extended nighttime sleep.
  • However, social and environmental factors influence sleep patterns, and animal studies indicate sleep can occur beyond immediate physiological requirements.

Purpose of the Study:

  • To investigate whether extended nighttime sleep in normal sleepers leads to significant improvements in daytime alertness.
  • To determine if individuals are chronically sleep-deprived or simply have the capacity for increased sleep duration.

Main Methods:

  • Review of existing literature and laboratory studies on extended sleep and daytime alertness.
  • Utilizing the Multiple Sleep Latency Test (MSLT) to assess daytime sleepiness.

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  • Analysis of factors influencing sleep duration, including social and environmental contexts.

    • Main Results:

    • Extended sleep provided only minor improvements in daytime alertness, as measured by the MSLT.
    • These minor benefits could be achieved through short naps without disrupting daily routines.
    • Extended sleep did not necessarily indicate chronic sleepiness, as pre-existing MSLT signs of sleepiness were often absent.
    • Mood effects were confounded by earlier bedtimes, and subjects did not always feel rested immediately upon waking.

    Conclusions:

    • Most people are not chronically sleep-deprived but have a capacity for increased sleep, similar to overeating or overdrinking.
    • Extended sleep offers limited advantages for daytime alertness compared to napping.
    • The decision to sleep longer may not always stem from a physiological need for sleep but rather from opportunity.