Approaching 100: Secrets of the 'superagers'

What will you be like in your 80s? If you find yourself living independently, robust in body and mind and with a wide social circle, congratulations - you are a superager.

In reality, most of us are living longer but more of those extra years are being spent in ill health, often with multiple chronic conditions.

We asked some superagers how to beat these ailments and age the right way.