The older I get the more I realize you should live it up while you’re young and check out before things get to bad. What’s the point of living to 100? Your body is worn out, everyone you used to know is dead and it would be a shame to get to the old folks home with no crazy stories to tell.
My guide is a 93 year old friend an mentor. He has several bionic body parts, a young chick girlfriend (only 72) whom he takes on round-the-world trips, and flies around with in his own airplane. He does this with just reasonable attention to nutrition and exercise, but remains very active mentally and in business. It's a good goal for most of us.