Karl Henry is Ireland’s most recognised and leading Personal Trainer and Wellness Coach. He is well known for his role as the leading Fitness Expert on RTÉ One’s Operation Transformation since the beginning. In January 2025, Karl kicked off The 40 Day Health Challenge as the Personal Trainer. In 2018, Karl released his fifth book called ‘Karl Henry’s Healthy Living Handbook’. The book offers an encouraging, practical, affordable, and sustainable plan to help the reader achieve lasting changes in their wellbeing and has become a number one best seller as well as achieving a second print run. 2018 also saw Karl launch his first podcast series entitled ‘The Real Health Podcast with Karl Henry’. Karl is joined by a variety of guests each week from all different walks of life and has surpassed the one million listener mark. Alongside personal training, writing and media work, Karl also specialises in Corporate Fitness and Wellness. From one-off lectures, to full corporate health and wellness solutions, Karl works with some of the top companies across the country to deliver results that last and programmes that work.