body clock
noun
: the internal mechanisms that schedule periodic bodily functions and activities
—usually not used technically
Examples of body clock in a Sentence
It takes a while for my body clock to get adjusted when I fly from New York to London.
Recent Examples on the Web
In other words, how the light influenced their internal body clocks.
—
New Atlas, 17 Jan. 2026
With a weaker circadian rhythm, light and schedule changes are more likely to disrupt the body clock, leading to shifts in sleep and activity patterns.
—Khloe Quill, FOXNews.com, 6 Jan. 2026
Then, sleep strategically to help your body clock reset.
—Alesandra Dubin, Southern Living, 15 Dec. 2025
Getting up at the exact same time every day stabilizes your circadian rhythm, also known as your body clock, which essentially tells your body when to release sleep hormones like melatonin and when to pump out wake hormones such as cortisol, says Schneeberg.
—Julia Ries Wexler, Outside, 30 Nov. 2025
See All Example Sentences for body clock
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New Atlas, 17 Jan. 2026
With a weaker circadian rhythm, light and schedule changes are more likely to disrupt the body clock, leading to shifts in sleep and activity patterns.
—Khloe Quill, FOXNews.com, 6 Jan. 2026
Then, sleep strategically to help your body clock reset.
—Alesandra Dubin, Southern Living, 15 Dec. 2025
Getting up at the exact same time every day stabilizes your circadian rhythm, also known as your body clock, which essentially tells your body when to release sleep hormones like melatonin and when to pump out wake hormones such as cortisol, says Schneeberg.
—Julia Ries Wexler, Outside, 30 Nov. 2025
See All Example Sentences for body clock
Cite this Entry
“Body clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/body%20clock. Accessed 26 Jan. 2026.
Copy CitationMedical Definition
body clock
noun
: the internal mechanisms that schedule bodily functions and activities
—not usually used technically
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