. >> my name is renay miller. i'm 32.m tennessee. >> when i was 19 years old, i became ill with ultracolitis. i went through several months of very difficult treatment. a lot of medications. >> 6'2", always been a big guy. brought on secondary complications, sleep apnia, prehypertension. >> you're too fat followed me into adulthood. i didn't realize how much until now. >> after 25 years, i'm working with the colorado department of corrections, i get to retire on october 1st. >> 13 months ago, i went into sudden cardiac arrest at the notre dame/southern cal football game. little did i know on that brisk october day, my life was going to change forever. >> my sister had to have implants. i wasn't even tested or considered to be a donor because of my weight. >> i was down for 52 minutes and shocked nine times and rushed to the hospital. >> a 10-year-old kid, you still want to be a part of something be a part of the team. >> it's sanjay gupta. >> hey, dr. gupta. how are you? >> i'm great, annette. how are you? >> i'm fantasti