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
Your digestive tract runs on a schedule shaped by your internal body clock and natural reflexes.
—
Abby Norman, Verywell Health, 8 June 2026
Even five to ten minutes outside shortly after waking supports the cortisol awakening response and sets your body clock for the rest of the day.
—Allison Palmer
updated June 4, Sacbee.com, 4 June 2026
Your circadian system needs real intensity to set the body clock, and no household fixture comes close.
—Allison Palmer
june 2, Fort Worth Star-Telegram, 2 June 2026
Circadian lighting is a full daily protocol sleep researchers use to keep their body clocks dialed in, and the morning matters more than the evening.
—Allison Palmer, Charlotte Observer, 9 May 2026
See All Example Sentences for body clock
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Abby Norman, Verywell Health, 8 June 2026
Even five to ten minutes outside shortly after waking supports the cortisol awakening response and sets your body clock for the rest of the day.
—Allison Palmer
updated June 4, Sacbee.com, 4 June 2026
Your circadian system needs real intensity to set the body clock, and no household fixture comes close.
—Allison Palmer
june 2, Fort Worth Star-Telegram, 2 June 2026
Circadian lighting is a full daily protocol sleep researchers use to keep their body clocks dialed in, and the morning matters more than the evening.
—Allison Palmer, Charlotte Observer, 9 May 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 14 Jun. 2026.
Copy CitationMedical Definition
body clock
noun
: the internal mechanisms that schedule bodily functions and activities
—not usually used technically
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