Our pools, gyms and even velodromes are full of new recruits since the Olympics. But, asks Sam Murphy, how can we make this enthusiasm last beyond Christmas?
From church choirs to karaoke bars, singing has always lifted people's spirits. But could it be good for their physical health too? Alice Wignall finds out
Dave Turner: The Trickster Xdream combines innovations in fitness and gaming technology to create an interactive exercise bike that simulates outdoor cycling