Karl Henry is one Ireland's leading personal trainers, well known for his work on TV's Operation Transformation and responsible for creating some of the most famous physiques in fashion, music, politics and industry. He holds a BSc(hons) Sports Management from University College Dublin along with personal training qualifications, and is currently studying for an exercise and nutrition masters science degree. Karl is a regular contributor to TV, radio and newspapers on health matters. As well as his personal training and media work, he regularly lectures on fitness and wellbeing, and is a self-described fitness fanatic, each year finding a new sport to further his knowledge to pass on to his clients. His interests include hill-walking, cycling, triathlon, swimming, mountain biking, kite surfing, surfing, marathons, ironman triathlons and, more recently, ultra-marathons.