Heat rises. It gets trapped under the blanket and helps keep you warm.

Semi related, your body loses the most heat through your head so wearing a warm hat on a cold day makes a huge difference.

There’s some good examples and discussion here https://youtube.com/playlist?list=PLJA_jUddXvY7v0VkYRbANnTnzkA_HMFtQ

How do people manage to invent intricate phrases?

https://en.wikipedia.org/wiki/Etymology

It seems like nowadays no matter what you do there’s a word for it and it’s probably considered something horrible by someone somewhere.

For the set of all things, there is usually someone who doesn’t like said thing, yes. That is how people and things tend to work, since there are so many people and so many things.

The tone of this post makes me think you did something shady lately and you’re laughing off getting called out. And who’s unironically saying ‘kts’ in 2025? Cringe