I'm 64 but I'm ageing super slowly... these are my secrets

You may have heard of Bryan Johnson – the entrepreneur and internet sensation who’s achieved worldwide fame for his attempts to roll back time and live to the age of 180.

Johnson is the US longevity guru who spends £1.5 million a year developing ­cutting-edge methods to slow the biological ageing ­process to an almost imperceptible crawl, including being infused with his teenage son’s blood plasma and employing more than 30 doctors to monitor the health of each of his 78 organs.

But you probably haven’t heard of Amy Hardison, the 64-year-old grandmother of 11 who, in an ­ongoing online competition, updated daily, called the Rejuvenation ­, recently beat Johnson at his very own game. For most of the last year, she has ranked fifth in the competition, while ­Johnson ranked sixth (first on the list was Dan Sullivan, an entrepreneur who aims to live to 156). Last June, Amy even placed as high as fourth (while Johnson took the top spot).