Angie,
Well if nothing else, you are providing exercise and entertainment for the ferrets.
When you do get around to using the Swiss ball, it is great for abdminals. I have seen a number of articles detailing the use of the medicine ball. It appears very useful too.
Belinda,
One of the things that kept my assistant from going to a gym was a guy that used to work with us. She would overhear him talking about the women he saw at the local spa. Her husband heard the same kind of stuff where he worked. My assistant is good as gold, but not a very outgoing person. The 'loose' talk made both her and her husband very uncomfortable. Growing up she was never allowed to play sports or anything, so physical activity is something she has learned later in life.
Travis