Is it possible to reverse ageing?

Sights like this Myanmarese bodybuilder in his 90s working out like someone decades younger could become commonplace if longevity experts can figure out practical ways to reverse ageing. — AFP

You may have seen some viral videos of extremely fit, white-haired senior citizens working out like they are still in their 20s or 30s.

They can be seen lifting heavy weights or doing pull-ups easily and nimbly, with well-toned and muscular bodies.