A: You should choose muscle powder. Muscle-building powder is suitable for people with thin body (high metabolism). Because thin people have high metabolism, even if they eat a lot every day, it is not enough for their health. Muscle-building powder can provide high calories and nutrition, and it is easy to absorb. It won't make your stomach swell, and you can drink calories and nutrition. Only in this way can we gain muscle and weight.

Protein powder is suitable for people with insufficient supplement in protein, because eating protein helps to increase muscle. If you don't get enough protein in your diet, you should eat it.

Protein powder and muscle-building powder are very different for people. Thin people must use muscle-building powder and supplement protein powder at the same time, and the effect is better. However, obese people (high fat and low metabolism) can only eat protein powder, and eating muscle-building powder will make them fatter.

MET-Rx products are better, and there may be a discount when buying them on their website. Go to official website after you get it.