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.