You rarely get satisfaction sitting in an easy chair. If you work in a garden on the other hand, and it yields beautiful tomatoes, that's a good feeling.

The gym and the treadmill is a good idea. But the problem is we spend so much effort in marketing messaging, deluding people into thinking if you get on your treadmill or you go to the gym, that's what you need. People who join a gym, the vast majority of them have quit within nine months and almost all of them have quit within two years. So if it's a longevity strategy, does not work.

Diet and supplements and exercise programs aren't what is achieving longevity. Having a faith-based community can add four to 14 years.

I think we need to think about our physical activity as a reward, as something enjoyable and something we look forward to doing, not something that we regard as self-flogging.

Life expectancy in America is about 79, we should be able to live to 92. Somewhere along the line, we're leaving 13 years on the table. So my quest is -- how do we get those extra 13 years? And how do we make those extra 13 years good years?

The brutal reality about aging is that it has only an accelerator pedal. We have yet to discover whether a brake exists for people.

The longest-lived people eat a plant-based diet. They eat meat but only as a condiment or a celebration. Nothing they eat has a plastic wrapper.