Latest Biology & Health News

In a crash or fall, time seems to stretch. The science says it's not real-time slowdown — it's denser memory. Here's how the brain does it.

Why do mosquitoes bite some people more? The science of skin acids, CO2, body heat, microbiome — and what actually repels them.

Why do muscles cramp? The neural control theory, why dehydration may be a myth, and what actually treats cramps — by the evidence.

Why do meals make you sleepy? The science of food coma — insulin, orexin neurons, the circadian dip, and the tryptophan myth.

Why does coffee make you pee? The science of caffeine as a mild diuretic, tolerance, the dehydration myth, and how it compares to alcohol and water.

Why do we get headaches? Explore tension, migraine, and cluster types, what causes the pain, red flags, and modern treatments like CGRP drugs.

Why do we shiver when cold? Inside the hypothalamus, muscle thermogenesis, brown fat (BAT), fever shivers, and what infants do instead.

The Default Mode Network activates when you're not focused on the world. What it is, what it does, and why depression, Alzheimer's, and psychedelics all touch it.

Blushing is involuntary facial reddening from sympathetic vasodilation. Only humans blush in response to social embarrassment; it evolved as an honest apology signal.

What does the appendix actually do? The microbiome safe-house hypothesis, immune function, appendicitis, and why it's not really useless.

Why do we sneeze? The evolutionary biology behind sternutation, from 600-million-year-old sponges to wild dogs voting by sneeze to salt-spitting iguanas.

Hiccups are involuntary diaphragm spasms. Learn the neuroscience, evolutionary origins, common triggers, and when hiccups become a medical concern.