There is no aging there’s only what we do with our time. 

If you spent 30 years in an office and ate McDonalds you will find yourself sick and incapable. 

It’s not age though- it’s what you did with your time.  If you spent the same time running for 1 hour a day, meditating for 1 hour a day, with a happy mind eating healthy organic foods you would be as fit or more fit than when you started out. 

It’s always what you do with your time. To reverse aging simply start doing things that make you feel younger.