internal clock
noun
1
: a system in the body that controls when a person needs to sleep, eat, etc.
The long trip upset my internal clock and I had a hard time getting to sleep.
2
: a clock or timing device that is inside a computer
Examples of internal clock in a Sentence
Recent Examples on the Web
Similarly, eating breakfast soon after waking helps regulate your body's internal clock.
—
Caroline Castrillon, Forbes.com, 7 May 2025
In other words, exposing ourselves to natural light early in the day helps regulate our internal clock so that our system stays balanced from day to night, winter to spring.
—Ana Morales, Vogue, 18 Apr. 2025
Establishing a consistent bedtime helps synchronize the body’s internal clock, leading to smoother mornings and better sleep quality.
—Lia Miller, Parents, 14 Mar. 2025
Your circadian rhythm—the body's internal clock—influences digestion, metabolism, and sleep quality.
—Lauren Panoff, Mph, Rd, Verywell Health, 28 Feb. 2025
See All Example Sentences for internal clock
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Caroline Castrillon, Forbes.com, 7 May 2025
In other words, exposing ourselves to natural light early in the day helps regulate our internal clock so that our system stays balanced from day to night, winter to spring.
—Ana Morales, Vogue, 18 Apr. 2025
Establishing a consistent bedtime helps synchronize the body’s internal clock, leading to smoother mornings and better sleep quality.
—Lia Miller, Parents, 14 Mar. 2025
Your circadian rhythm—the body's internal clock—influences digestion, metabolism, and sleep quality.
—Lauren Panoff, Mph, Rd, Verywell Health, 28 Feb. 2025
See All Example Sentences for internal clock
Cite this Entry
“Internal clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20clock. Accessed 12 May. 2025.
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