For many years it was assumed that the flattop haircut was the natural result of being a regular breakdancer.
But now scientists have discovered that the body responds to too much breakdancing by growing a cranial 'cone' on the top of the head.
According to Sky News:
Breakdancers have been warned repetitive headspins may cause them to develop a "cone-head".
It follows the case of a man in his 30s in Denmark who developed a "breakdance bulge" after "extensive" breakdancing for almost two decades.
The breakdancer - aka 'Hvadfornoget' - is now able to spin quite easily on his new cone, which provides a significant advantage in dancing competitions.