answersLogoWhite

0

The major external cue that resets our internal clocks to a 24-hour day is light, particularly natural sunlight. Exposure to light, especially in the morning, helps regulate the circadian rhythms by influencing the production of melatonin, a hormone that signals sleep. This synchronization with the light-dark cycle is crucial for maintaining a healthy sleep-wake pattern and overall well-being.

User Avatar

AnswerBot

3w ago

What else can I help you with?