The mobile phone was said to be the ultimate liberating device. Rather than being forced to stay, not just inside a house, not just in a particular room, but almost literally chained to a wall, you could now go anywhere to talk to someone. The irony is, however, that mobile phones have actually made us a lot less mobile. Not only are we more sedentary than ever before, but evidence suggests we now spend longer indoors than we did before mobile phones became prevalent. We should rename our beloved devices 'immobile' phones. Why would we feel the need to go anywhere, after all, if we can obtain all the information we need and communicate with anyone we want from the comfort of our own homes?