By Tzvi Machlin Arizona Cardinals pass rusher J.J. Watt revealed today that he had an atrial fibrillation issue this past Thursday and that news of it would break today. Now the details are out and they are scary. During FOX NFL Sunday, NFL insider Jay Glazer offered new details on what happened with Watt on Thursday. Glazer revealed that after having heart issues on Thursday, Watt had to be taken to the hospital to get his heart restarted. But a serious heart issue apparently wasn’t enough to keep Watt off the practice field. He was apparently back with the team the very next day. Crazier yet…