Finger length linked with exercise?

Researchers looked at the differences in activity levels between normal mice and selectively bred active mice.

The more active ones had a higher ratio of the length of their second finger, divided by the length of their fourth finger.

Researchers say this new study indicates a strong association between digit length, voluntary exercise and high levels of prenatal stress hormones.

They say the desire to exercise may be fixed very early in life.

 

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