One of my male friends is so skinny.He wants to build some muscle that is why he signed up for a gym. He was advised by his trainer to also take testosterone booster. I hope that it will work. I could imagine him already with those muscles. I am sure that he will be very happy. He needs that for more confidence. I told him though that he looks good the way that he is. Some women do like thin men anyways. But he said that he is not doing it to attract women but for himself.