Would Love to Exchange Places

Mai's boyfriend will be working on a cruise ship soon.  And while he is waiting for his deployment, his mom enrolled him in a nearby gym for a weight gain program.  Mai also bought him muscle building supplements to help him achieve his target weight easily.  What amazes me is that this guy eats like a construction worker but he never gained weight.  It should have been a great advantage, but the problem is he is too thin.  Oh, what do I have to do to be just like him!  Sighs.