Hope u will gain something. I'm 177cm too at 17. And I'm looking for some gain too. Honestly I'm looking like kid, narrow shoulders, childish face (here I don't mind, much girls telling that I'm looking so cute and my girlfriend since first meet was like u r so cute), very small body hair, proportions of child and my brother is close to my height at 14. Maybe is some chance especially with my poor life style in last years and I'm still growing too. Will take mk677 and letro from half of September. Let's give a try.