A doctor may know more than a peasant, but a peasant and a doctor know more together.

So learning to play a new instrument, learning a new language - those sorts of things will pay dividends for years or decades to come.

Have fun, be active. Ride a bike instead of driving, for example.

Walking is the only way proven to stave off cognitive decline - it works.

The people you surround yourself with influence your behaviors, so choose friends who have healthy habits.

Exercise, from a public health perspective, is an unmitigated failure. The world's longest-lived people live in environments that nudge them into more movement. They don't use power tools, they do their own yard work, they grow a garden.

True happiness involves the pursuit of worth goals; without dreams, without risks, only a trivial semblance of living can be achieved.