Sleep
Everything we have published on Sleep, newest first. Background, research and plain explanation — not only the headline of the day.
Health is a topic here, not advice. We report what research shows, name the source, and say what is still unknown. For anything about your own health, ask a doctor.
Why Songs Get Stuck in Your Head
An earworm is not a tiny record player in the brain. It is a loop of memory, prediction and silent rehearsal—and the best way out depends on how the loop is being fed.
The Baby-Sleep Advice That Reversed Itself
A generation was once told that babies should sleep on their stomachs. The history of the back-sleep campaign shows how public-health advice changes—and why today's guidance covers the whole sleep space.
Separate Beds Are Not a Relationship Diagnosis
Sharing a bed can support closeness and alter sleep physiology. Sleeping apart can remove snoring, movement and schedule conflicts. The arrangement matters less than the reason and the conversation around it.
Blue-Light Glasses Solve Three Different Problems — or None of Them
Eye strain, sleep and retinal damage are often bundled into one sales claim, although they involve different mechanisms and very different evidence.
Chronic pain is missing from America’s heat warnings
Chronic pain can make it hard to walk, carry groceries or sleep through the night. A new study finds that extreme temperatures are linked to that kind of pain.