You probably have never heard this before in relation to exercise but you really are going to need a sofa for this one (and probably a TV for the sofa to make sense). Next time you're sitting it out watching your favourite show and the ads come on get your body working with a little sofa-assisted action. Do this every time you sit in front of the Telly and before you know it you'll be rocking a new bod without the hassle of having to hightail it down to the gym. All you need to make this happen is the sofa (of course) and you. Plus, admit it, there is a certain thrill to knowing that you can get fit without leaving your sofa in front of the Telly and missing out on all your favourite programs.
Extra Credit: 30 seconds rest between sets.