The gym is full, the pubs are empty - it can only be January, as a good proportion of the population resolves to shape up and lose weight. But are your efforts going to help you fit into your jeans (with a J), or are you just fighting against your genes (with a G)? Plus, we discuss how genes might jump between cows and snakes, and we've got gout, goats, giant pandas and a glass bottom boat.This is the Naked Genetics podcast for January 2013 with me, Dr Kat Arney, brought to you in association with The Genetics Society, online at genetics.org.uk. Like this podcast? Please help us by supporting the Naked Scientists