Eat more brain tonic. If you are old, you can also take some drugs to tonify the kidney. Also, you should pay attention to rest at ordinary times and don't stay up late. Staying up late is very bad for your health. If you want to lose weight, you'd better not take the method of not eating food, but exercise. Go to bed early at night and get up early in the morning to do exercise. Persistence is victory, which can be reduced.