Download the FitHiit App today to book 30-minute High-intensity interval training sessions with one of our Personal Trainers in parks, on commons or from your home in South-West London. Choose to train on your own or with up to three other people. From the FitHiit App, you can view our Personal Trainers and their schedules, book sessions, see ongoing promotions and all relevant contact information. Optimize your time and maximize the convenience of exercising by downloading the FitHiit App and booking a session today. Working out has never been so easy.