Keep banging your head, but maybe just a little less ferociously and with a little more concern for your health so that you don’t have a serious brain injury like this one guy from Germany. The Lancet (via The Daily Beast) recently published a case study that examined a 50-year-old patient who came into the ER after having a constant headache for two weeks. He had no signs of drug use or prior medical history that would result in something like that, but he had been to a Motörhead show in the last month. Surgeons removed the blood clot and he ended up being fine, but they linked his subdural hematoma to his intense rocking out. He’ll probably think twice about going hard at a metal show next time (or maybe not, because that’s pretty badass). In the study, doctors wrote that the event “serves as evidence in support of Motörhead’s reputation as one of the most hardcore rock’n’roll acts on earth, if nothing else because of their contagious speed drive and the hazardous potential for headbanging fans to suffer brain injury.”

[Photo by Daniel Boczarski/Getty.]