The longer you stay in the apartment, the more you get inflated, fat, and round. On day three, four, or five, you might get too big for the apartment. You will only keep growing until you pop. The only way to stop the growth is to leave the room, but you will not go back to normal. The growth doesn't feel bad it feels kinda good. The entire torso will eventually start to look completely round like a ball. It is rare, but you might start to float from the helium, but it is rare.