[aiexplorations]

At the risk of sounding like confirmation bias, I have found many relatives and friends to adhere to this kind of simple rule. The more agile and active you in middle age, the better your sleep quality probably is, and both of these are a proxy for how well you will age, apart from genes.

[PopeDotNinja]

A researcher from the University of California, San Francisco posed this trivia question at a Q&A event on healthspan... At age 65, what single factor most accurately predicts the likelihood you'll live to age 100. The answer was walking speed (faster is better). He said that this has been shown in multiple studies, but they weren't sure why. Sorry, I don't have a source.

[OscarTheGrinch]

Use it or lose it.