Is this instead of the gym and yoga, or in addition to them?

It's a fundamentally different thing, not a replacement for training. In the gym and on the mat you apply effort, while our method is about recovery without effort: the body rests, lengthens and relaxes while gravity does the work. Many come to us precisely because they're tired of 'grinding' at workouts and because yoga comes through tension for them. It pairs perfectly with any activity you do - it's the restorative half of it, not a competitor.