Singhao was born on January 16, 1971, to Puan and Boonlap Poonchuay in Khuan Phang, Ron Phibun, Nakhon Si Thammarat, southern region.
He trained in Muay Thai from Tor.Hintok gym based in neighbouring Hin Tok.
He had fought with many of the renowned Muay Thai kickboxers of the period, such as Thongchai Tor.Silachai, Chartchainoi Chaorai-Oi, Jaroensap Kiatbanchong, Changnoi Sirimongkol, Dokmaifai Tor.Sittichai or Rattanachai Wor.Wolapon.
In addition to Muay Thai, he has also competed in amateur boxing tournaments in his regional hometown.
After retiring from being a Muay Thai practitioner, Singhao was ordained as a monk at a Wat Tha Pho temple in the city of Nakhon Si Thammarat.