asked 90.5k views
21 votes
Most people are awake during the day and asleep at night because their.

asked
User AdrienXL
by
8.4k points

1 Answer

7 votes
Melatonin

As nightfalls your brain releases the hormone melatonin to make you sleepy due to the less light that influences your circadian system
answered
User Andrewsi
by
9.5k points
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