Specific exercise improve symptoms, daily full-body exercises remove root causes.
Exercise your brain to prevent Alzheimer's disease. If you are forgetful, you need to practice. 3-5 minutes a day
The body has the instinct to adapt to its environment and evolve itself. Where you need improvement, you work on it.
This exercise requires a quick response from the brain. If you can do it with practice, it shows that the brain is improving.
Keep practicing for a long time to maintain the function of brain nerves and prevent dementia.
Just one exercise is not enough, I will share more exercises later, you can combine them for better results.
If you are in good physical condition, it is recommended that you start daily full-body exercises, 1 hour a day, in addition to hand exercises, and more, I think the results will be better.