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In the daytime, light enters the retina and stimulates the hypothalamus, the part of the brain that maintains circadian rhythms, letting the body know it’s time to be awake and functioning.

Our bodies’ circadian rhythms function best with established routines, predictable light, and lower noise levels.

While blue light has gotten a bad rap for disrupting our circadian rhythms, research suggests that it’s only stimulating when it’s too bright.

While it’s true that our circadian rhythms directly affect our digestive activity, as biologist Lawrence Scheving detailed in the journal Gastroenterology, those individual patterns rarely sync up with the time on a clock.

The full cycle was 18 hours, which meant the timing of our circadian cycles were constantly changing.

Bright light is what keeps our circadian rhythms in good order.

Lighting signals your body's circadian rhythm and can have a strong effect on your mood.

“One of the most important things you can do for your sleep is to have a routine to keep your circadian rhythm normal,” says Suh.

In general, Tb's showed a marked circadian cycle in phase with photoperiod.


On this page you'll find 32 synonyms, antonyms, and words related to circadian, such as: constantly, day-to-day, everyday, often, periodic, and regular.

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.