Hi ! my age is 20 years and my weight is very low it's jst 51 kg. I use to do gym and my instructor advice me take the supplement from which I can easily gain some weight in just few months. But my family didn't allow me for this and I also dn't want to take any supplement coz some says it will be harmful for our body. My instructor said that you can't increase your weight until you didn't take any supplement. So plz help me guys that what should I do ?
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