9Get Moving!

Those who think they have not time for bodily exercise will sooner or later have to find time for illness.

Edward Stanley

In comparison with previous generations, most of us are so much less active. There are a number of reasons for this. Technology, for example, has made our lives easier; machines wash our clothes and our dishes and clean our floors and carpets. We order food, clothes, and much of what we need (and don't need) from the internet and have it delivered straight to our door. We get from A to B sitting in cars, buses, and trains. And much of our entertainment involves more sitting: sitting in front of a TV or a screen.

Compared to our grandparents, fewer of us are doing manual work; most of us have jobs that involve ...

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