I think this is what my trainer is trying to show me, to use outside rein & leg to turn the horse's whole shoulder & body to a circle to the inside. I tend to do "B" which only turns his head.
Learn some tips on how to improve your rider wellbeing. Fitness through to nutrition and mindset
Hilary Moore Hebert gives you this exercise to loosen the stiff horse and refocus the mentally tense horse.
Exercises to help with toe position in dressage
Shorten & Lengthen Strides Using Ground Poles - TheDigitalHorse
Understand what neutral spine is and how to achieve it off and on the horse for dressage
6 leg exercises on video for dressage riders. Improve strength, balance and alignment with these. Videos explaining each
Dressage 101: The Jack-in-the-Box
Build Your Horse’s Confidence in Dressage | Dressage Today
Yoga exercises to help improve your dressage posture
Gymnastikreihe Ingrid Klimke Pferdia TV
Horsemanship Horse Training Schooling
Engaged vs. Disengaged seat
This diagram shows you how to check your horse is correctly balanced in lateral work, and, therefore, that this work is of gymnastic value
trail pattern - Google Search