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Bodily Oddities: strange things the human body can (sometimes) do

by Demjan Vestervester.si

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gist

Demjan Vester's Bodily Oddities is a browsable catalog of everyday human quirks—reflexes, illusions, anatomical variants, and harmless alarms—each with a short plain explanation and a prevalence estimate. The homepage groups recently added entries, try-it-now tricks, and scary-but-normal sensations so readers can recognize aphantasia, blue-field dots, call of the void, and similar phenomena without mistaking them for emergencies.

ideas

  • Name the quirk, then size how common it is. Each entry pairs a plain mechanism with a prevalence range, from universal afterimages to under-1% ambidexterity.
  • Scary often means ordinary. Sections like “It felt scary but it is normal” reframe fasciculations, brain zaps, and call of the void as common, usually harmless signals.
  • You can try several on yourself. Afterimages, blue arcs of the retina, and blue-field entoptic dots turn perception into a quick self-experiment.
  • Anatomical variants are easy to misread clinically. Accessory ossicles, bifid uvula, and cervical ribs are often silent until an X-ray or exam mistakes them for injury.
  • Prevalence estimates stay humble. ASMR and Linburg–Comstock ranges span widely, so the catalog treats counts as provisional.

quotes

People with aphantasia see only a faint image or none.

Demjan Vester, defining aphantasia against ordinary mental imagery.

They are your own white blood cells moving through the capillaries of the retina.

Demjan Vester, explaining the blue field entoptic phenomenon.

It is the brain's safety system being misread, not a hidden wish.

Demjan Vester, reframing call of the void as a safety misfire.

They are harmless but can be mistaken for fractures on an X-ray.

Demjan Vester, on accessory ossicles as a clinical red herring.