This is not quite idiomatic. Шевелиться = двигаться. Brains don't actually move. I guess this originates from шевелить мозгами - to use one's brain, to think. So, it may mean brains that don't work (quite literally)

🙏👍

'Brain fog' is another way to describe it.

😂

👍

😊😊😊

Sleepy wits?