The Shake Weight it is not, but as 21st century workout solutions go, Tweet_Fit certainly has the potential to get people talking -- or, at the very least, tweeting. Developed by a UK design student, the connected gym accessory attaches to the end of a standard dumbbell and sends updates to your Twitter account when you start and stop your workout. Take it offline and it guides you through the perfect curl. Tweet_Fit's designer points out that it offers a novel way for trainers to keep track of their clients, and can be used to spur healthy competition between friends. Given, it won't make brag
