Instinctive Sleeping and Resting Postures (2000)

Original Article ↗ Hacker News Discussion ↗

Overall Reception of the Paper

  • Many found the article “fascinating,” “life-changing” or at least thought‑provoking, especially for reconsidering sleep surfaces and posture.
  • Others criticized it as insubstantial, anecdotal, or “not really scientific,” pointing to minimal citations and speculative links (e.g., dog asthma).
  • Several noted it reads more like an informed field note or hypothesis generator than a rigorous study.

Mattresses, Floors, and Sleep Quality

  • Multiple commenters reported less back/neck pain on hard surfaces: floors, tatami, thin pads, or hard mattresses.
  • Some had the opposite experience: firm beds worsened sleep, while softer mattresses with shoulder support improved it.
  • A few proposed simple A/B tests (e.g., floor vs mattress for a month).
  • Hard surfaces were said to give better “feedback” on posture; soft beds can hide strain.

Sleep Positions and Individual Variation

  • Large variability: some can only fall asleep on their back; others get nightmares or breathing/snoring issues in that position.
  • Several people naturally use many of the “instinctive” postures from the paper (except more extreme ones like shin-sleeping).
  • Squatting and certain “paleo” postures are easy for some and impossible for others, often linked to ankle/hip mobility and lifetime habits.
  • Reports that changing position (e.g., forced back-sleeping after injury) eliminated chronic pain for some but not others.

Anthropology, “Primitive” Peoples, and Racism Concerns

  • Debate over using “tribespeople” and gorillas as models: some see it as useful comparative primate observation; others see casual racism and over-romanticizing “natural” cultures.
  • Appeal-to-nature critiques: differences in disease rates could stem from many confounders (activity, lifespan, environment), not just sleeping posture.

Scientific Rigor and NIH Hosting

  • Disagreement over what counts as “science”: some defend observation-heavy, hypothesis-generating papers; others insist on data and reproducible studies.
  • Concern that NIH/NLM hosting may give anecdotal work an aura of endorsement despite disclaimers.

Gender, Anatomy, and Missing Dimensions

  • Multiple commenters found the repeated focus on penis protection and insect bites odd.
  • Noted absence of discussion of women, bust size, pregnancy, obesity, and other common conditions that affect sleep ergonomics.