Traditional Culture Encyclopedia - Weather inquiry - Why are people particularly sleepy when the weather is cold?

Why are people particularly sleepy when the weather is cold?

Because people are warm-blooded animals, they need energy to maintain their body temperature. When winter comes, they need more energy, so they feel tired easily. ....

It's like a person trapped in a snowy mountain ... it's very cold, and then he falls asleep, and then he dies after waking up ... that's why. ...