Article continues below advertisementBefore Ozzy Osbourne's death, he opened up on his SiriusXM show, "Ozzy's Boneyard," about the rigorous and detailed training he did prior to taking the stage one last time for his Back to the Beginning performance on July 5.During the May broadcast, Osbourne - who died on Tuesday, July 22 - said his blood pressure was being checked "15 times a day," adding, "I've got this f------ device on my finger. It's a monitor to say how my heart rate is.