You are going to transition, not hibernating for the winter. There is no reason to gain weight, as it is unhealthy. Even if it did help you get fat where you wanted it, I would not do it, because usually when you gain weight, it goes to your belly, and it will probably stay there and you would have to work it back off eventually. Your body will draw in fat when it needs it. Much like if a chubby girl goes through puberty, it does not guarantee her the ideal body for a woman or anything. I am not sure what determines it, I really know nothing on the matter, so do not take my word for it, but that is like going on taco bell diet to lose weight. Incomprehensible.