this post was submitted on 25 Feb 2026
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Microblog Memes
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A place to share screenshots of Microblog posts, whether from Mastodon, tumblr, ~~Twitter~~ X, KBin, Threads or elsewhere.
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Yes. You have a circadian clock. It's a clock in your body and it's pretty accurate. It's why you get hungry around the same time every day.
The experience of regularly waking up right before an unpleasant sound would occur is from operant conditioning.
I used to live by a railroad track in the city. So all night at specific times, freight trains ran through , blasting their horns. After a month I would wake up about 5-10 min multiple times a night, right before the trains. So I could cover my head and ears. I still mostly remember the schedule. The worst one was the 645. I had to get up at 730 for work. So this one of often woke me up and then I couldn't go back to sleep, making my day start as shitty as possible.
The decibels was nearly 80 in my apartment. Which was close to as if a lawnmower was running in my room. Insanely loud.
So the aversion/punishment part of the conditioning worked well to train me to wake up and cover my head with a pillow.
https://en.wikipedia.org/wiki/Circadian_clock
https://en.wikipedia.org/wiki/Operant_conditioning