Winter training is usually either about wrapping yourself up like a left-over Christmas present and braving the ice, snow, wind, rain, fallen trees, floods, landslides and whatever else, or pushing out watts on the trainer indoors for hours. Indoor cycling app MyWhoosh has a better idea though: it has launched monthly MyWhoosh Treasure Hunts, which it says offer shares of a Bitcoin prize pot for exploring the 1,150-plus kilometres of virtual roads on the MyWhoosh platform.