You can turn your trusty iPod into a personal trainer with Nike's audio workouts that you simply download into your iTunes, and Shape has one on up now that's free! Talk about recession-proofing your workout. This 20-minute workout, focusing on arms and abs, is led by Slovakian tennis pro Daniela Hantuchova and accompanied by tunes from Pop Noir and Cruel Black Dove. You can find the downloadable workout on this page. For all you Mac folks, once you're there, hold control and click the link to download Daniela's workout into your iTunes.