Why AI work can feel oddly exhausting
— It might not be workload, but decisions
You use AI, the work moves forward, and yet something feels off. You’re done — but your mind stays noisy.
If you’ve used tools like ChatGPT or Claude, you may have felt this:
- You’re making progress, but you’re strangely drained
- Your mind gets hazy and you can’t decide what to do next
- The next day, the fatigue is heavier than you expected
“It’s supposed to be convenient — so why am I this tired?” It’s a reasonable question.
In 2026, Harvard Business Review introduced a phrase for a similar pattern: “AI brain fry.” The idea is simple: when you juggle multiple tools and keep monitoring, verifying, and correcting outputs, your attention can saturate. The discussion is based on a BCG study of 1,488 U.S. workers at large companies.
AI work isn’t always “easier” — it can add decisions
AI can speed things up. But the faster it gets, the more your job quietly shifts.
For example, you start stacking micro-decisions like these:
- Which answer do I pick?
- What should I rewrite?
- Is this direction safe?
- Should I ask again, differently?
Each one is small. Do it dozens of times in a short window, and it starts to bite.
So AI work can be not only “faster,” but also a chain of repeated decisions.
The real driver: decision density
What matters isn’t just how much you did, but how tightly decisions were packed. Let’s call that “decision density.”
- Comparing multiple AI tools
- Iterating by trial and error
- Switching between projects or tasks
More options create more decisions — and more decisions increase cognitive load.
Feeling hazy is a normal signal
When decisions pile up, your brain can get stuck holding a queue of “pending” items. That’s when these show up:
- Thoughts won’t organize
- Your judgment gets sloppy
- You can’t find a stopping point
That hazy feeling isn’t laziness. It can be a sign your brain is hitting its processing limit. And if you push through, you may “finish” — but pay for it tomorrow.
The point isn’t that AI is bad. It’s that the way you use it can add load — especially constant checking and switching.
Quick moves (short)
- Cap “one more try” by time, not by attempts (e.g., stop after 10 minutes).
- Pick one answer to move forward, then switch tasks.
- After switching tools, write one line: “what I’m doing right now.”