So I said to Dolph, “We practiced one thing, [but] let’s just go at it for the first 15 seconds. I want you to try to knock me out. Just bomb away.” Well, he did. And he gets me in the corner, and he’s bombing away, and I’m tryin’ to slip the punches and then he comes with this uppercut in my chest, and I went: That hurt. Okay. Cut. Let’s finish the rest of the day. That night, I felt this thumping. It was hard to breathe. I went to the emergency room. My blood pressure was like 290, and they put me on a low-level flight to St. John’s Hospital where I was put into intensive care because the pericardial sac around my heart was swelling and impeding the beating of my heart. I was there, like I said, for nine days surrounded by nuns. Not good.

I love to read that in Stallone's voice.