Stephen looks at how new technology can help keep us fit and healthy. He road-tests some of the latest gym gadgets and gets a makeover from Amy Childs, from The Only Way is Essex, using some weird and wonderful beauty devices. Some of the gadgets on the show include an app which predicts how long you will live, the world's most incredible treadmill and a device that claims to make you slimmer in just 30 minutes. And Stephen attempts to build the ultimate running machine that will enable him to race against double Olympic champion Kelly Holmes.

• Stephen Fry
• Richard Ayoade
• Hugh Dennis