Computers based products that track your weight and give workout advice are now the new fad. These devices are so advanced that they send your weight to your computer and even twitter if you want it. Withings and Suunto are the big companies that create products like this. The products range from $100 to $200. These products are almost like a work out buddy, without actually having a workout partner. Study's say people are more likely to work out when they have someone with them. Why not have a watch that tells you everything you need to know for a workout.