I can tell you that there is a calm and peace during the final seconds of life.
I was driving from Arizona to L.A. to visit family. Thought I was having a severe bleeding hemorrhoid problem and even called my Doc on the cell phone to set up action once I got to L.A. in 2 hours. Suddenly I was sitting in a pool of warm blood, sharp pain in my groin and getting light headed. I pulled off the highway into a gas station and dialed 911 then my son. I remember he said "you will be OK Dad I can hear the sirens. (little did I know i was 1 mile from a Palm Springs ER room). I next remember the paramedics calling into the hospital and giving my blood pressure "60/30". They were instructed to give me a bulla high rate IV. Next I remember the ER Doc telling me I has in trouble and to make peace with my Higher Power. "I will do everything I can to save you today." I remember drifting away and the Nurse calling "Code Blue bed 7". This happened twice. I had fluids going in one arm and fresh blood in the other. My BP was almost zip. I remember the peace and calm....then ZAP I was back. "He's back" I heard. Apparently you don't remember feeling the shock of the paddles.
After surgery with my BP stabilized I was told I had a ruptured artery (aneurysm) in my colon.
I have been given so far 3 more years on this planet and strive to do good for all who cross my path. I am grateful. I has always wondered what my last moments would be like....now I know. I still prefer life.
BTW the Doc told me that heavy lifting and squats has nothing to do with this condition.