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

Stanford storylines: The Cardinal look to break a five-game losing streak but need to overcome a fourth trip to the Eastern Time Zone in seven weeks and a 9 a.m. body clock kickoff. —Harold Gutmann, The Mercury News, 2 Nov. 2024

Summary Circadian rhythm is the internal body clock that regulates the times of being awake and asleep in 24 hours. —Sanja Jelic, Verywell Health, 3 Oct. 2024

But Foster said the practice schedule change was meant to give coaches extra time to game-plan before taking the field, not to prepare players’ body clocks for the Ducks. —Ben Bolch, Los Angeles Times, 24 Sep. 2024

This is meant to follow peoples’ body clocks, but may interrupt your sleep. —Ramsey Qubein, Condé Nast Traveler, 31 July 2023

Word History

First Known Use

1916, in the meaning defined above

Medical Definition

body clock

noun

-ˈkläk 

: the internal mechanisms that schedule bodily functions and activities

—not usually used technically