He's a massive outlier that I don't think can be used as an example of anything.
No one else in the past 90 years has been able to play til 39, therefore i dont think a sample size of 1 is fair to say his activity level is what keeps people going.
I used to feel very young; mostly from eating well, lifting weights, sleeping well and in general maintaining a good lifestyle.
Past few months I've been commuting 4hrs odd a day. It's aged me 10 years.