First, you can read more books and think more. The brain should always be in a state of exercise to maintain vitality and not become Alzheimer's disease.
Second, you can eat some health products to ensure the vitality of your brain. You can't eat specific drugs. Be sure to go to a professional hospital and take it under the guidance of a professional doctor.
Third, play more educational games. There are many in the market, but don't spend too much time on them. Playing too much will hurt your brain and neck. You can also play chess and chat with your good friends to keep a good mood.