Oh wow you're brand new to Lemmy! Yes you can say whatever the fuck you want here for better or for worse. I mean, depending on the community a mod might get upset. Welcome :)
And yeah that's true, it can be hard to be stimulated adequately with a lot of that stuff. Sometimes I like to listen to audiobooks, which I think can be more engrossing if you make it challenging for yourself by really trying to picture the changing scene like a movie. Other times I will 3D model structures in my mind or think about code or something like that. But I really recommend finding something to get off the screen, its so worth it.