Allen suggests that mind is like a muscle and weakens if you don’t exercise it regularly. He offers very simple 10 ways to exercise our mind.

  1. Regularly solve puzzles
  2. Play a musical instrument
  3. Paint, sketch or draw.
  4. Learn a new language.
  5. Learn how to juggle.
  6. Play Chess, Backgammon, Checkers or even Go!
  7. Play computer games.
  8. Write!
  9. Try amateur dramatics.
  10. Travel.