Ah, I see I got your attention.
And you are wondering what I could be talking about. The treadmill in your guest bedroom? (The one with the clothes on it.) The roller blades in your closet? The semi-inflated ball in the backyard, or the weights you have lying around just in case you are inspired to bicep curl? Nope, none of those. Give up? This one-size-fits-all, miraculous tool of amazing design is the FLOOR!