zeitgebers
/ˈzaɪtˌɡeɪbərz/
noun
- External cues or signals, such as light or temperature, that help regulate an organism's internal biological clock.
- Sunlight is the most powerful zeitgeber for resetting your sleep-wake cycle.
- Artificial light at night can confuse the zeitgebers that tell your brain it's time to sleep.
- Meal times can act as zeitgebers that influence your body's daily rhythms.
Synonyms