This is what happens when one twin exercises and the other doesn't

By Sarah Berry
Updated May 18 2015 - 10:28am, first published April 20 2015 - 12:00pm
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied
A new study of biological twins has profound implications for our understanding of the importance of diet and exercise. Photo: Supplied

The Bupa twin ads, in which the characters get to meet the healthier version of themselves, has its roots in reality.

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