Can you exercise?

Rent one of these and use it for 30 minutes a day (or whatever):
http://www.waterrower.com/rentals/rent_us.php

Why?
It's takes up virtual no space when stood on end.
It's ridiculously low impact.
You're only under a 3 month obligation.
It's an incredible workout you can tailor to any level.

Anyone should be able to store one somewhere in their home for 3 months. 10 pounds is no match for a rower and 3 months.