the.com/circadian rhythm
Your body's internal dictator, running your life on a 24-hour schedule you didn't approve.
means The roughly 24-hour internal clock that regulates sleep, hormones, body temperature, and other biological functions, even without external time cues.
from From Latin 'circa' (around) plus 'dies' (day) — literally 'about a day.' The term was coined in the mid-20th century by a researcher studying biological rhythms, to describe cycles that persist even in constant darkness, proving the clock is internal, not just a reaction to sunrise and sunset.
- origin
- latin for about a day, circa diem
- control center
- a pinhead cluster of neurons behind your eyes
- light sensitivity
- resets daily by sunlight, not your alarm clock
- jet lag
- your rhythm, not your plane, causes the misery