India, April 18 -- At 63, Jacqueline Hooton isn't just a grandmother; she's a powerhouse fitness coach on a mission to debunk the myth that strength training is only for the young. In an April 12 Instagram video, the fitness coach demonstrated that the king of exercises - the squat - is accessible to everyone, regardless of age or physical limitations such as osteoarthritis. Also read | Bryan Johnson sparks fresh health debate, says 10 squats are better than a 30-minute walk: Here's what you should know

"You can squat," Jacqueline insists. "You just need a modification that works for you," she says. Her philosophy centres on the idea of functional longevity: maintaining lower-body strength required for basic independence, such as getting...