The repeated trauma from head-spinning causes the epicranial aponeurosis ... A headspin hole isn't the worst injury you could sustain from breakdancing either. One dancer broke their neck ...

Breakdancing made its Olympic debut this ... but the protuberance had not hindered the patient from continuing his head-spinning activities," the researchers wrote in the case report.

He was playing hide-and-seek in a park in Tuen Mun when he spotted a group of teenagers spinning on their heads ... ideas might the public have about breakdancing? How are these changing?