F45 Training Mount Isa: Get fit & have fun with an in & out 45-minute workout that will challenge you & help you achieve your health & fitness goals. The F stands for functional training mix of circuit, resistance, and HIIT-style workouts geared towards everyday movement. 45 is the total amount of time for sweat-dripping and heart-pumping fun. With thousands of exercises in our database and a nearly infinite amount of combinations, members will almost never take the same class twice. F45 Training is here to bring you the world's most innovative workout. Team Training, Life Changing!