the.com/jitteriness
the body's drum solo when caffeine and adrenaline forgot they weren't a band.
means The state of being nervous, twitchy, and unable to keep still, often marked by trembling or restless energy.
from Built from 'jitters,' an early 20th-century American word for nervous unease, plus the '-y' and '-ness' that turn a feeling into a noun. 'Jitter' itself is of uncertain origin — likely imitative, echoing the small, jerky movements it describes, and it's the same root that gave the 1930s dance craze its name in 'jitterbug.'
- caffeine link
- blocks adenosine, the brain's calm-down signal
- physical tremor
- muscles fire faster than your nerves intend
- survival roots
- ancient fight-or-flight wiring still pulling levers
- blood sugar
- crashes can mimic too much espresso
- contagious
- watching anxious people raises your own arousal
caffeine-induced tremor — medical condition where consuming 400+ mg caffeine daily causes observable hand shaking and anxiety
hyperthyroidism tremor — symptom in graves' disease where excess thyroid hormone produces fine tremors and nervous energy