On becoming frail with age

Our ancestors walked about 5 miles a day - or about 10,000 steps. Many people are moving less than they did before the pandemic. If 10,000 steps feel too out of reach, it's OK. It doesn't really matter what you do, as long as you're focused on movement.

In villages in remote parts of the w...

For much of history, human beings had an active lifestyle, but it did not include any kind of formal exercise.

Movement just for movement's sake is a relatively new phenomenon in human history.

Getting up every 10 minutes or so just to go to the bathroom or make yourself a cup of tea is turning on your muscles. It uses up fats and sugars in your bloodstream, and it produces molecules that turn down inflammation.

Interrupted sitting and not sitting in a chair that's nestling you...

People often get stressed about how much they should be sleeping. The stress elevates their cortisol that prevents them from sleeping. So they get into a vicious circle.

People who live in places where there is no electricity, iPhones or TV's don't sleep any more than the ...

There is this idea that running wears away your cartilage and causes arthritis in the knees. But it is not valid. Studies show that people who run more are less likely to get arthritis in their knees and more likely to benefit from physical activity.

Knee injury is indeed most com...