Biomechanics is the map. The coaching is where it all comes together.
Rider biomechanics is the map I use. It tells me how your body actually moves, and how to use it more effectively and efficiently, not for a better-looking position, but so the effort you put in works for you and your horse, and keeps you riding well for years to come.
The real target isn't position at all. It's stillness, enough quiet in your seat that the aid you're giving is the only thing arriving at the horse, not buried under everything your body is doing that you never asked it to do. That part runs through your nervous system before it runs through your muscles. If you can't feel what your own seat is doing, you can't change it, and the horse can't tell the difference between the aid and the noise around it either. So that's where I coach. Breath first. Then the nervous system. Then the movement. Then the aids.
If you're after an exercise or stretching program for riding, there are people who do that very well. What I work on is how you use your body in the saddle. Some riders are still finding that. Some know what to do and want to refine one thing. Some find it all disappears the moment the pressure is on.
Wherever you are, that’s where we start.