It’s the period of New Year’s resolutions – and the difficulty of sticking to them. French channel Canal+ has come up with some motivation in the form of the “Binge-fit” challenge, which converts the miles people run into credits that enable them to stream more of their favourite shows. Inevitably they’ll return to their sofa to binge-watch hits like “Marie-Antoinette”, but even if they eat cake while doing so, they can work off the pounds the next day.