clicking here and you can buy it from Amazon here.
Basically for every hour that I work out it will give me a code which I redeem on their website for 60 points. I can then use the points I earn to buy giftcards through their website. For example a $10 gift card to Amazon or Itunes is 1800 points, (30 workouts). Or you could save your points and buy a Nintendo Wii for 12,500 points (209 workouts).
Mine only just came in the mail so I can't tell you just yet how well it works but I'll keep you posted. Free gift cards are just the motivation I need to go and work out!