What are the 5 desirable habits for nervous system?

The first habit for a healthy nervous system would be eating right, and getting proper nutrients. The second habit would be exercising the nervous system, even by simply writing neatly and slowly on a piece of paper for a few minutes a day. Another habit would be drinking the right amount of water per day and staying properly hydrated. A fourth habit would be regular exercise for one's body, not just the mind. And a fifth good habit would be getting the proper amount of rest that the body desires.