If you want to be thin, it will be better to drink low-fat yogurt, because you are still studying, and a small amount of fat is necessary.

Yogurt is good for the intestines, which can help excretion and won't make you fat.

In addition, if you want to be thin, don't eat sweets and snacks, and do more aerobic exercise. It is not advisable to rely on not eating staple food.