When you get to be the age of some of us, you realize that many who are dead were fat and/or smokers.
How many fat 90 year olds has anyone seen?
Fat smokers die in their 50s.
Working a full day at a stressful job and 20 mile spin or a 5 mile walk does wonders for one's brain and the endorphins are nice, too.
I won't give you any advice because you wouldn't like it.