India, Oct. 6 -- Denise Kirtley believes '50 is the new 50'. The online coach keeps sharing fitness tips and hacks on her Instagram page, Fifty Fitness Journey, to 'help midlife women find their strength'. Denise, 54, took the internet by surprise when she shared a video of herself with her 70-year-old aunt with many Instagram users praising the two 'fit and beautiful ladies' in the comments section of her post. Also read | Woman reveals secret to her toned legs at 59

Sharing details of her fitness journey, Denise wrote on Instagram, "It's not our genes!! Redefining what ageing looks like requires one thing; a foundation of strength and health. We've both worked hard for our results. I've lost 50 pounds (22.6 kg), and my aunt has lost 35...