Cycling makes you fitter and healthier, right? Simple. But... is on-road or off-road better for fitness? How does terrain affect gains? And where does everybody's favourite hurt locker, the indoor trainer, fit in the mix?
Road offers long expanses of the black stuff, punctuated with all sorts of gradients that allow you to put out measured efforts and readily rack up four or even six hours of riding with little let-up. These are the training-ride conditions that road racers swear by.
