My father was a bad alcoholic. He was told at age 30 he would die young if he didn't quit drinking. He didn't quit. He died when he was 63. He even live 15 years after he had a heart attack that he spent 3 days drinking to cover the pain and didn't tell anyone about.

I'm 60 now. I don't drink much, certainly not an alcoholic. I also have bradycardia - an unusually slow heart rate, though after testing mine is not a medical concern. My resting heart rate is 60.

The way I figure it, if I have my old man's constitution, if I take reasonable care of myself and, if your heart is factory-engineered to give X number of ticks and I'm using mine up slower than normal, I should live until I'm 150.