Juany118
Senior Master
There is also the fact women like them.
All the above said, in this case you need to decide then, what are your priorities physically. Getting big, martial arts, or both. It could be from talking with your Sensei getting big will hurt the art you chose. Since you seem to really want to really excel at the Martial Arts as well it may mean you would be better served looking for a different art to study. Or maybe you really like the art you are taking but want to keep getting bigger so you may have to accept that you are limiting yourself when it comes to your art, even if only to a small degree. Only you can make these decisions though because we each set our own priorities.