Do These Japanese Pensioners Have The Secret To A Healthy Old Age?

People live longer in Okinawa than anywhere else in the world.
At 80 - you're still a child,' goes local lore. Meet the 88 year old farmer who still works 11 hours a day. Okushima is 103 but still does press-ups! But is it the sense of community, the fish diet, hard work? And can this incredible longevity last forever?