The Fitbit has to be our favourite gadget of the year. This is a wireless tracker that logs how far you walk, how many stairs you climb, how active you are, and how well you sleep. Together with web and smartphone apps, it can also track your calories and overall health. We talk to Pollyanna Woodward from the Gadget Show, and Gareth Jones from Fitbit, about this impressive little wireless gadget. Details and pictures at www.frequencycast.co.uk/fitbit