Strong males make good dancers
Researchers at Northumbria University say heterosexual men pick up clues about other men's physical qualities from their dance moves.
Thirty men between 19 and 37 were digitally mapped using 3D technology as they danced to a simple drum beat.
The results showed men took notice of strong arm and upper body movements.
Women too were focussed on upper body movements but uninterested in legs.
The findings, published in the American Journal of Human Biology, suggest that male observers pick up on the strength of their potential rivals for female mates.
Here is an example of so-called "good dancing".