If you're plugged into the world of longevity online, you might have seen chatter about 'DNA clocks' or 'biological age.'
These purport to measure how young you are biologically - as opposed to chronologically. The idea is that a fit, healthy person might have a younger biological age than their true age - and thus greater longevity.
So what's the relationship between physical exercise and biological age?
Guest
Professor Andrea Maier, Professor in Medicine, NUS Academy of Healthy Longevity, National University of Singapore
References
Physical activity and biological age measured by DNA methylation clocks: a systematic review and meta-analysis