I can't back this up with research, but from my own experience, concentrated thinking is good for the brain. Activities and environments that promote concentrat

I can't back this up with research, but from my own experience, concentrated thinking is good for the brain. Activities and environments that promote concentration are good while those that disturb concentration are bad. Good: writing, quiet, solitary runs and walks, thinking in the shower, schedule with plenty of margin, moving around, standing, working in large blocks of time. Bad: noise, too much information (TV, radio, clutter), hurry, packed schedule, too much food, too little water, sitting too long.