Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day

By: Shogo Sato, Texas A&M University, The Conversation

Outlets: The Conversation

Published: November 2, 2025

Words: 1,100

Last Updated: 3 weeks, 1 day ago

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Anyone who has suffered from jet lag or struggled after turning the clock forward or back an hour for daylight saving time knows all about what researchers call your biological clock, or circadian rhythm – the “master pacemaker” that synchronizes how your body responds to the passing of one day to the next.

This “clock” is made up of about 20,000 neurons in the hypothalamus, the area near the center …

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