Meet the Therastick: an exercise tool that helps you strengthen and tone your muscles. It also helps you get a good cardio workout and work on your flexibility. It has 4 strength levels, so even if you are not super fit, you can put the Therastick to good use.
The Therastick comes with 4 interchangeable resistance bands. It does not take a whole lot of space but lets you push your muscles. More information is available here.