Why sleep?

Many ask, but few answer. We present two of science's most intriguing theories.

| 3 min read

Register for free to listen to this article
Listen with Speechify
0:00
3:00
Share

Sleep takes up around a third of our lives, and is an object of fascination during the other two thirds. "I dreamt that..." is surely among the top 10 conversation topics of all time.

Given this, it is surprising how little attention is paid to the anthropology of sleep. Intriguing (but too little) work has been done on sleep practices in nonindustrialized societies,1 and there has been some engaging speculation about sleep patterns;2 it all points to our Western conventions as being a behavioral outlier.

We condense our sleep into a single lengthy stint, in which any interruption is considered to be a pathology, while our forebears and preindustrialized societies enjoy segmented sleep. They also display a fuzzy "continuum of arousal...from...disengaged semialert, to somnolence or drowsing, to dozing, to napping,"1 while we tend to draw strict boundaries between sleep and wakefulness, and demand short transitions between the two (although my ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to digital editions of The Scientist, as well as TS Digest, feature stories, more than 35 years of archives, and much more!
Already a member? Login Here

Keywords

Meet the Author

  • Richard Gallagher

    This person does not yet have a bio.

Published In

Share
Image of a woman in a microbiology lab whose hair is caught on fire from a Bunsen burner.
April 1, 2025, Issue 1

Bunsen Burners and Bad Hair Days

Lab safety rules dictate that one must tie back long hair. Rosemarie Hansen learned the hard way when an open flame turned her locks into a lesson.

View this Issue
Conceptual image of biochemical laboratory sample preparation showing glassware and chemical formulas in the foreground and a scientist holding a pipette in the background.

Taking the Guesswork Out of Quality Control Standards

sartorius logo
An illustration of PFAS bubbles in front of a blue sky with clouds.

PFAS: The Forever Chemicals

sartorius logo
Unlocking the Unattainable in Gene Construction

Unlocking the Unattainable in Gene Construction

dna-script-primarylogo-digital
Concept illustration of acoustic waves and ripples.

Comparing Analytical Solutions for High-Throughput Drug Discovery

sciex

Products

Green Cooling

Thermo Scientific™ Centrifuges with GreenCool Technology

Thermo Fisher Logo
Singleron Avatar

Singleron Biotechnologies and Hamilton Bonaduz AG Announce the Launch of Tensor to Advance Single Cell Sequencing Automation

Zymo Research Logo

Zymo Research Launches Research Grant to Empower Mapping the RNome

Magid Haddouchi, PhD, CCO

Cytosurge Appoints Magid Haddouchi as Chief Commercial Officer