The good habits and customs may promote the health, the bad habits and customs can impair the health. Has the good habits and customs can improve person's life quality. I think the good habits and customs should be various. For example, the science reasonable diet is suitable with exercise rule life style and so on. The science reasonable diet must little eat the high protein, the high fat, high thermal food, refuses to overeat and overdrink. Pays attention reasonably matches the diet, eats the fruit, the vegetables. Best is fixed time the quota has the rule eating.