Based on the Dunedin Study.
This graph shows one year increments from biological age 30 to biological age 58.
All of the people measured were 38. 38-39 is where the tall bars are.
It's clear the many people age before their time.
Biological Age at Age 38
Some people age much less quickly than others.
The people who age less give a damn. They are described as conscientious by the researchers.
What is conscientious?
The don't smoke or take drugs.
They use alcohol in a moderate way.
They try to eat a good diet.
They try to exercise a bit.
They are socially engaged.
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