Not bad. I suggest a field trip to learn more. It takes three months to six months to become an all-around personal fitness instructor, because the all-around personal fitness instructor involves many private training courses and needs to fully learn fitness skills and professional knowledge. Knowledge possessed by a fitness coach: basic theoretical knowledge, practical action skills and training methods of a fitness coach. Our fitness instructor courses include: national fitness instructor training, Victoria's secret extreme slimming training, prenatal and postnatal training and other courses.