It is predicated on the assumption that you dislike what you are doing during the most physically capable years of your life. This is a nonstarter—nothing can justify that sacrifice.

You think you're fatigued, therefore you can't exercise. In fact, you choose not to move, therefore you feel fatigued.

The biggest misconception about work is that you need to spend the majority of your time doing it.

Resveratrol is fascinating stuff. One of the best sources of information about it is the Immortality Institute. They have a forum where some people are in the 500 Club, as they call it. They've been taking 500 milligrams for years. It's a really great source of data.

Role models who push us to exceed our limits, physical training that removes our spare tires, and risks that expand our sphere of comfortable action are all examples of eustress—stress that is healthful and the stimulus for growth.

Effectiveness is doing the things that get you closer to your goals. Efficiency is performing a given task (whether important or not) in the most economical manner possible. Being efficient without regard to effectiveness is the default mode of the universe.

Doing something unimportant well does not make it important.