1. Novelty: you need to try new things, including things you aren’t good at.
2. Variety: given that the brain is composed of a variety of functionally distinct areas, you need to ensure a complete mental “workout circuit” to maintain sharpness in all areas. Excessive specialization is not the best strategy for our long-term Brain Health.
3. Challenge: you need to be exposed to increasing levels of challenge, so the task is never too easy.
If you can only do one thing, learn something new every day, no matter how small.
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