India, Dec. 8 -- Conversations about ageing often focus on limitations, slowing metabolism, reduced mobility and the belief that major lifestyle changes are unrealistic later in life. But every so often, a story emerges that completely flips that narrative. One such story is that of Shyy Sachdev, who spent 50 years without exercising and then transformed her body and health in a way that's inspiring thousands. (Also read: Noida, Delhi oncologist warns 'persistent cough is not normal'; shares early signs of lung cancer you should not ignore )

In her December 4 Instagram post, Shyy shared a video of her incredible before-and-after transformation. In the "before" photo, taken in her early 50s, she appears healthy but not particularly active...