Luknimit started Muay Thai at only 6 years old, inspired by his oldest brother who was already well-known at the time.
His oldest brother, Charnsak Singklongsi was a Lumpinee Stadium Champion at 108 lbs and beat Saenchai multiple times.
Taweesak's twin, Taweeporn was a boxing Champion of Hong Kong.
Luknimit's youngest brother, Kotchasarn Singklongsi had a notable knockout win over Namsaknoi Yudthagarngamtorn and twice fought for the Lumpinee Stadium title against Attachai Fairtex and Singsarawat 13Coins.
At his best, he has beaten Wanheng Menayothin, Norasing Lukbanyai, Thongchai Tor.Silachai, Kaimukkao Por.Thairongruangkamai, Kaonar P.K.Saenchaimuaythaigym, Thanonchai Thanakorngym, Superbank Mor.Ratanabandit, Thaksinlek Kiatniwat, Chorfah Tor.Sangtiennoi, Prajanchai P.K.Saenchaimuaythaigym, and Suakim P.K.Saenchaimuaythaigym.