Crying from emotion carries more protein and stress hormones than the reflex tears you get chopping onions — your body is literally flushing stress chemistry out through your eyes.
Crying from emotion carries more protein and stress hormones than the reflex tears you get chopping onions — your body is literally flushing stress chemistry out through your eyes.
Overnight, the soft discs between your vertebrae soak up fluid and decompress. A day on your feet slowly squeezes them flat again — so you actually shrink as the day goes on.
Skin-repair cells run on a 24-hour body clock. Cuts you get during the day can close up to twice as fast as ones you get at night.
Brain scans show grey-matter changes that last at least two years after birth — distinct enough that a computer can tell who has been pregnant from the scan alone.
Same DNA, different prints. Ridge patterns are sculpted by random pressure and movement in the womb, so even genetic clones end up unique at the fingertips.
Cataract surgery removed the lens that normally filters out UV light. Afterwards he could perceive bluer, near-ultraviolet tones — and his water lilies shifted toward violet.
Tiny muscles yank your hairs upright — once useful for fluffing a coat to trap heat or look bigger to a threat. You kept the wiring long after you lost the fur.
Hit the roof of your mouth with cold and nearby blood vessels rapidly clench, then flood. The ache is referred pain — a built-in alarm telling you to slow down and guard the blood supply to your brain.
Just reading about yawning can set one off. It's tied to empathy: the more socially bonded you are to someone, the more catching their yawn becomes.
tap →swipe ↑ for depthswipe ↓ to exit
