 Changpuek is a seven time world champion who has fought some of the world's best fighters at middleweight to heavyweight and has wins against world class fighters such as Rob Kaman (x3), Rick Roufus, Peter Smit and Tosca Petridis.After ending his career as a professional fighter while working for Sitpholek gym in Pattaya, Thailand, he continued his employment at that gym as a Muay Thai trainer.Changpuek was born and raised in a small village some 30 km from the town of Prakhonchai, Buriram in northeastern Thailand, one of seven children.