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
Darker mornings and more evening light knock your body clock out of whack — which means daylight saving time can usher in sleep trouble for weeks or longer.
—
Lauran Neergaard, Chicago Tribune, 7 Mar. 2026
Darker mornings and more evening light knock your body clock out of whack — which means daylight saving time can usher in sleep trouble for weeks or longer.
—ABC News, 6 Mar. 2026
How to reset your sleep schedule Resetting your body clock doesn’t have to be drastic—a few small tweaks can make the transition easier.
—Angela Haupt, Time, 3 Mar. 2026
Get some morning light by going outside early to reset your body clock naturally.
—Saleen Martin, USA Today, 27 Feb. 2026
See All Example Sentences for body clock
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Lauran Neergaard, Chicago Tribune, 7 Mar. 2026
Darker mornings and more evening light knock your body clock out of whack — which means daylight saving time can usher in sleep trouble for weeks or longer.
—ABC News, 6 Mar. 2026
How to reset your sleep schedule Resetting your body clock doesn’t have to be drastic—a few small tweaks can make the transition easier.
—Angela Haupt, Time, 3 Mar. 2026
Get some morning light by going outside early to reset your body clock naturally.
—Saleen Martin, USA Today, 27 Feb. 2026
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 13 Mar. 2026.
Copy CitationMedical Definition
body clock
noun
: the internal mechanisms that schedule bodily functions and activities
—not usually used technically
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