FYI....Here is a credible independent study on physical activity extending your life expectancy.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395188/
The study's conclusion:
"In conclusion, while regular physical activity increases life expectancy, it remains unclear if high-intensity sports activities further increase life expectancy".
Should be common sense that physical exercise will extend your life. I do not do high intensity exercise but enough exercise to extend my life.
Since I retired at age 65 with a higher quality of life. I will extend my life by following the recommendations by such studies. This includes physical activity, enjoying the finer things in life, and being positive. Thinking that you only have 20 years of life remaining at age 65 is thinking negatively.
I do know one thing: Happy people tend to live longer because they have a purpose in life. Grandkids, overseas vacations, cruises, first class travel, and having extra money to spend, etc. People take cruises and check in first class hotels because staff treated them well. When my servants or my staff treat me well at home, I am happier and this will translate to a longer life. Without extra money to spend, your happiest level is not as high compared to a person with much more money to spend.
Here is a study that demonstrated people with more money live longer.
https://www.nytimes.com/2020/01/16/science/rich-people-longer-life-study.html
People are thinking in terms of a general life span after age 65 for "everyone" in general...without looking into how a higher quality of life can extend your life. People should google: Does rich people live longer?