Can cycling keep you younger?

A common New year's resolution is to hit the gym and get fit. But while most people might give up and return to the comfort of the sofa by February, research suggests that being physically active for your whole life has big health benefits. But can it slow down the ageing process? One problem with studying this is that most older people are pretty inactive, or sedentary, and tend to do little if any physical exercise at all. As a result, it's difficult to know whether some of the health issues seen in ageing, such as heart and lung problems or loss of muscle and bone, are just the result of... Like this podcast? Please help us by supporting the Naked Scientists