When you're tired, your brain doesn't have enough energy to feel happy. It's like when you're playing with your toys and don’t have enough batteries, everything just feels slower and sadder. Serotonin, a happiness chemical in the brain, gets used up during the day, so when you’re tired, it can be harder to feel good. That’s why people often feel sad or even moody after a long day.
Examples
- After a long day at school, you feel so tired that even your favorite snack doesn’t make you happy.
- Your brother is usually cheerful, but after working late all week, he comes home and just sits on the couch looking sad.
- You stayed up studying for an exam, now it’s hard to feel excited about anything.
See also
- Why Do We Yawn When We're Tired?
- Why Do We Dream in Color?
- Why Do People Tell Jokes?
- What Makes Some People Brave?
- Why Do We Feel Nervous Before a Big Event?
Discussion
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Categories: Psychology · mood· tiredness· mental health · Text is available under the Creative Commons Attribution-ShareAlike License.