Onyx Muay Thai Trainers all speak English and are from Singapore. So there is no language barrier here. The gym trainers really taught the beginners well there and was really impressed about the amount of attention they paid in making sure she knows what she is doing.Instructor average ratio was 1 : 5. During the training session, there was around 15 people and there were 4 instructors going around. So 1 instructor to 4 people is really a good ratio to make sure you are well taken of. Even for those intermediate training choose from diffrent types of program such as Muay thai, Boxing, Brazilian Jiu-Jitsu, Judo, Strength & Conditioning.