Podfitness claims to be the world's first "customised audio personal training service", and I won't argue with it. It's a service that creates personalised podcasts, with exercise instructions given by over 80 personal trainers, mixed with your own tunes and then downloaded onto your iPod or MP3 player.
It costs $19.99 a month, and has just revamped its service, adding a new Dashboard and easier user interface, making workouts more customised, adding Calendar and Journal features, and providing a Trainer matching system to suggest trainers and programs that match your fitness profile (I wonder if there's an 'unfit kebab muncher' profile...)
Podfitness is also trumpeting its latest celebrity trainers, although they'll be more familiar to US users, consisting of one of NBC's Today Show fitness gurus, Mr Olympia 2006, and That Bloke Off The Partridge Family Who's Now On Reality TV.
For all the slightly-annoying motivational guff spouted by its experts ("Stay strong! It's your goal, I just want you to get there. Go on, do it!"), Podfitness is a great idea, and there's surely scope for a Brit version that blends fit celebs with your own music. As long as it's not the C-listers who make pots of cash from fitness DVDs, obviously.