India, April 21 -- Joan MacDonald is redefining what it means to age. At 80, the Canadian grandmother is a fitness inspiration, moving from a life of chronic pain and medication to becoming a gym powerhouse. Her journey proves that the human body is remarkably adaptable, regardless of the age. Also read | 91-year-old woman proves fitness has no expiration date: 'I go for a swim, yoga, Pilates and walk 12000 steps daily'

Joan's transformation began in January 2017 when she was 70. In her Instagram Highlights, she revealed that at 198.6 pounds (90 kg), she was struggling with high blood pressure, acid reflux, vertigo, and painful arthritis. Faced with increasing dosages of medication, Joan decided to make a change, leaning on her daughter ...