Limiting too much input to the brain. Interesting, never thought of that.
Specially before going to bed. If I don't calm my thoughts, or use my phone to browse social media, and get a big dose of dopamine hit, I don't sleep well and just have many fast dreams when sleeping. I don't feel as rested the other day and my focus is not the same.
Limiting too much input to the brain-- it's THE BEST. But it's a super-bold move, unplugging and only being in the present moment. I did it once, for 10 days (it's called a vipassana retreat) and I've never felt better, more connected. I wanted to never leave the forest.
Doing stuff like that is awesome. But we can do stuff like that at home too. We can at night progressively not use our phones, computers, TV, etc. Maybe put on a half light, etc. Stretch, do some yoga, breathing exercises, meditation, etc.