The trampoline takes up the center of my bedroom! I've also considered taking it outside when the weather gets warmer and drier.
Excellent idea, for a couple of reasons, at least. First, it will establish a habit of exercising outdoors--making a transition to other outdoor activities (hiking, biking, etc) more natural. Second, and again, this is specific--someone who is overweight should be discouraged, whenever possible, of "hiding away." You'll have mail in a minute.