I was a big fan of Jack Lalanne. I used to watch him swim on TV, pulling all those rowboats with dozens of people in them. But I have no idea whether his fitness routine kept him alive longer. He had a good sense of humor, though. When asked about sex, he had a standard joke, saying that despite their advanced age, he and his wife still made love almost every night: "Almost on Monday, almost on Tuesday, almost on Wednesday..." However, then there's George Burns, who DID make it to 100. He had none of the conditioning Jack did. Here's a bit from an interview with him:
"Is it true that you smoke eight to ten cigars a day?"
"That's true."
"Is it true that you drink five martinis a day?"
"That's true."
"Is it true that you still surround yourself with beautiful young women?"
"That's true."
"What does your doctor say about all of this?"
"My doctor is dead."
He did say that he thought the most important aspect to longevity is lack of stress. I have to go along with that.
Anyway, RIP Jack.