He was inspired to take up Muay Thai by watching his older brother Claynoi Rasemechan train in the Sor.Worakulchai gym.

[2]: 46:35  After taking the ring name of Chamuekpet Sor.Worakulchai as suggested by Dieselnoi, Bootdee began participating in Muay Thai fights at the age of 12 in his neighborhood.

He won his first title in the Pinweight division at 17-years-old by defeating Samart Payakaroon by decision in 1980, a fight that Chamuekpet himself doubted he could win.

In the 1990s, Samart Payakaroon advised Chamuekpet to stop taking unnecessary damage if he wanted to continue his Muay Thai career and so Samart would teach him the rope-a-dope Muay Femur style wherein Chamuekpet would keep his back close to the ropes of the ring and would be more reserved with his strikes.

[14] He was consistently matched up against best possible opponents in the weight classes that he was in such as Samart and Kongtoranee Payakaroon, Oley Kiatoneway, Samransak Muangsurin, Jaroenthong Kiatbanchong, Wangchannoi Sor.Palangchai, etc.

[9] During the golden era of Muay Thai, Chamuekpet broke the record for the highest number of accumulated belts from the Lumpinee and Rajadamnern stadiums.

Chamuekpet's favorite memory from his Muay Thai career was his successful title fight against Chaidet Kiatcharnsing[4] wherein he won by KO.

The Thai media would then label him as "Evergreen," "Mr. Young Forever," and "Father Time is a Myth" (Pho Banmairuroy).

[4] After starting his Muay Thai career as Chamuekpet Sor.Worakulchai he would change the latter half of his ring name 7 times.

[4] Chamuekpet has cited Vicharnnoi Porntawee, Orachunnoi Hor.Mahachai, Dieselnoi Chor.Thanasukarn, Samart Payakaroon, and Kaensak Sor.Ploenjit to be his top 5 best Muay Thai fighters.