At UFC 253, middleweight champion Israel Adesanya demolished challenger Paulo Costa, knocking out the top contender in the second round and earning a Performance of the Night bonus along the way. But it wasn’t just Adesanya’s dominant performance that made headlines that weekend. “The Last Stylebender” also drew attention for his right pectoral muscle, which appeared to be swollen before the fight even began. After the fight, Adesanya revealed he underwent medical testing to determine the cause of the swelling and now we know the results, though answers are still a bit wanting.