First of all, diet
Pay attention to a balanced diet, don't be picky about food, don't be too biased towards a certain food, and the food should be diversified.
Second, psychology.
Last/better/previous/last name
Optimistic and positive, not unhappy, generous and not haggle over every ounce.
Third, in sports.
Many people are addicted to sedentary, so they have no time to exercise. You can get a fitness card if you can, and you can exercise by walking or skipping rope if you can't.