F45 London Training is a 45 HIIT workout that will challenge you like never before. The F stands for functional training, a mix of circuit 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! more... See more text