 I don't care if you have to sit in a chair and march your legs, or if you're somebody who's over 60 and is still taking five-mile walks, it doesn't matter. You can improve your cardiovascular fitness by simply moving your body. And I think it starts with baby steps. You know, you may not be in the mindset to walk, or, you know, the kind of thing, maybe it's the first time you go is you go to the end of the block and back. And you can build that up over time, can you not?