Why does heat make us sleepy when we are tired? We naturally cool down when it’s bed time and we sleep better when our bodies are cool.
In: Biology
Doing things requires energy and making energy generates heat.
The body tries to go into a lower energy state (sleep) so it doesn’t produce as much heat when it’s hot. This reduces the risk of overheating. Some cultures have a siesta where they nap during the hottest part of the day.
When sleeping at night you typically cover yourself with more things than you do during the day (assuming the same temp) because your body produces less heat.
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