Keiron is the first free-body training system based on virtual reality technology.The name is inspired by Chirone, centaur of Ancient Greece and mythological trainer of heroes like Achilles. Keiron assists the user in each movement in order to achieve a correct and effective training. By relying on gamification, it constantly stimulates users to improve their performance, thus increasing their motivation. Thanks to its combination of gamification and free-body training, Keiron's goal is that of attracting, entertaining and training in an effective way new users in sports clubs across Europe and beyond. By simply wearing a virtual reality headset, the user will perform a complete workout based on his level of athletic training. Throughout the whole training, Keiron will guide the user by providing an interactive virtual environment. It is exactly this kind of interaction that will help users to correctly perform exercises. A constant challenge that will allow users to train properly, improve their athletic training and psychophysical wellness, while having fun at the same time thanks to the gamification. Keiron is an innovative product intended for those gyms and sports clubs that aim to improve their attractiveness and to offer their customers experiences that are both entertaining and fulfilling.