What is the undeclared to Longevity?
Answer:
soft bathroom tissue
Being happy near yourself, EVERYTHING in moderation (drink, food, excercise, etc), and virtuous genes?
don't piss me off.
Obey God and maintain his Commandment's!
Normally happiness and loving relationships. But if you really ask me, longevity is approved by fate / destiny.
Genetics, lot, and lifestyle. You can't control the first two, but the third is negotiable.