exercise is that you should go for short, intense intervals rather than waste hours on the Stairmaster. Shorter workouts, you say? Good with us, but what about the gear to go with all that? The Airun Plus shoe is designed for the HIIT exerciser who wants to track his BMI and caloric burn rates all the while controlling shoe weight. The built-in Smart Technology controller records BMI and calorie burn results while the weighted insoles can be added or removed based on your needs. Weight and speed information comes from a sensor in the right shoe, while the entire kick is designed with shock absorption and safety in mind. Ready to buy? If you're serious about your body, these things will run you £112.50 ($224) and they come all the way from England.