Train at the Bangkok gym of living legend and 3-time WBC Champion Chatchai Sasakul - Thai Trainer of the Year, and master of boxing technique.
Training Guideline (It is up to your skills)
One of the best Muay Thai Gym in Bangkok. Trainers are friendly and experienced, especially "Kru Neung" for Boxing.
I met with the champion, who just trained next to me. He was incredible indeed. Just tried to follow what he was doing, get sweated a lot.