Although eating and exercise are the key to losing weight, actually eating can't directly lose weight, but controlling the body's calorie intake through a reasonable diet and cooperating with exercise, so that the calories consumed every day are greater than the calories consumed in the body. So as to lose weight. Want to lose weight and eat less high-calorie food, greasy, sweets, carbonated drinks and so on.

I understand the latter question as tonifying kidney and enriching blood and qi. Please look at the following two pictures: