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On a bright afternoon in Jiangsu, China, Xin Yin is playing with a mouse like her teacher. One by one, they put the rats on a small treadmill that starts slowly and gradually speeds up. These littermates are born faster, able to run faster with higher levels of lactic acid than laboratory mice.
The secret of their speed is not taken from their genes – the animals come from the same genetic background as a group of control mice. And he never had a special education. In fact, their fitness seems to be derived from their father’s fitness habits before they were even born. It’s a study that shows that running can help not just an athlete, but her unborn children.
“I was shocked when I first saw the data,” says Yin, a biochemist at Nanjing University.
