I am not an admirer of Rush, especially his delivery. However, his basic premise is correct and some folks have a real problem facing the fact of their eventual demise

Many industries have have made billions upon billions advertising that their product, diet, regime, plastic surgery etc will help make them ageless. The 60's is the new 40's is a case in point. Age is just a number is another.

IMHO genetics the prime indicator. I do believe in exercising to keep the body flexible and strong. The Greeks advice of "all things in moderation" is good advice. Final maintaining a god mental and emotional outlook also helps.