I'm not sure the tired/overwhelmed hangover effect is necessarily from social media. I like to think most of my time spent on the internet is productive,reading documentation and cs articles/papers for the most part and i still get that hangover feeling.
That’s mental fatigue from learning and being engaged on a topic for a duration. Maybe some additional from screen time/blue light fatigue. But it used to happen after studying for hours pre-internet.
Just my hunch, but post student life, I think many people are not actually using the internet regularly the way you describe. Only a small percentage of people are doing productive tasks, it’s mostly leisurely consumption
There's a noticeable difference to me between exercising my thinking skills and feeling mentally exhausted versus consuming lots of media and feeling "hungover".
I get that exhausted feeling after any hard day at work. On the other hand, scrolling through reels for about 30 minutes gives me a headache. If I spend over an hour on YouTube, I also get a similar feeling, but only if that time was spent watching many different videos. If I watched one 2 hour video, I feel fine.
