Men's Health Magazine and PumpOne, makers of online videos, have partnered to launch iPhone and iPod-compatible workout videos, offering a range of affordable videos that will show users how to get the most from their exercise regimes. At just $10 (about £5) a pop, with some being free, the videos are cheaper than getting a personal trainer, and should ensure that you don't bust something by trying to go it alone with those heavy weights you've seen glistening in the gym...