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Definitions

circadian

[sur-key-dee-uhn] / sɜrˈkeɪ di ən /


Example Sentences

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Biological sleep rhythms, known as circadian rhythms, naturally change during adolescence.

From Science Daily

Research published on December 29, 2025, in Neurology, the medical journal of the American Academy of Neurology, found that people with weaker and more irregular circadian rhythms were more likely to develop dementia.

From Science Daily

While metabolic measures remained largely unchanged, the timing of meals did affect circadian rhythms.

From Science Daily

The more blue-white tones in the lighting, and the brighter it is, the more it helps support our circadian rhythms—the biological clocks inside our cells that drive our cycles of sleepiness and wakefulness.

From The Wall Street Journal

"These things are not rocket science, but they're really fundamental to having a good, healthy circadian rhythm and a good healthy physiology through the winter."

From BBC