My horse is recovering from PSD surgery a few months ago so no ridden work yet. But I do feel like it’s something I’ll continue with in my training (assuming the horse makes a full recovery and gets back to work). I say this as an FEI rider with a self-trained FEI horse with FEI scores in the upper 60s/low 70s. So, I think I have enough to experience to comment on things like this, and I say the Balance Through Movement Method (BTMM) is an excellent tool in the dressage rider’s toolbox. I can definitely say I will use these tools with the next (and any) horse I buy in the future.
That being said, I’m not going through the pillars exactly the way Celeste does it. I’m more concerned with teaching the horse to turn off the brachiocephalicus (her Pillar 1, step 1) and keeping it off as much as possible (at liberty, work, etc.). I think there’s a lot of value to teaching the horse that they can exist and move through the world without this muscle engaged. I think correct dressage is very good at teaching the horse to engage the thoracic sling (keeping in mind a lot of trainers aren’t “correct” in their training, but that’s another story), but many are less explicit about turning off the brachiocephalicus. Contemporary dressage just kind of assumes that will happen if it’s done correctly. And a good trainer that knows what they are doing will train the horse to work without the brachiocephalicus engaged just as a matter of course. But poor and mediocre trainers don’t, and a lot of “dressage” horses continue to move through the world (including under tack!) with the brachiocephalicus engaged, or engaged when things get hard (exhibit A: the rein back in 95% of horses, at any level).
The primary advantage of this method, in my opinion, is the explicit calling out of this incorrect (and damaging) way of moving, and the emphasis on how to fix it (i.e., leading the horse to relaxation, helping them figure out how to turn the brachiocephalicus off, and helping them figure out how to keep it off while moving through the world). I have found this to be very, very valuable, as no other trainer I’ve seen or worked with has ever emphasized this quite this much and to this degree (and I’ve ridden with lots, including a handful of very BNTs).
I’m probably not going to do much with the second part of pillar 1 (teaching the horse to lift through the withers/thoracic sling with the brachiocephalicus turned off) and pillar 2 (teaching the horse to adduct the forelegs while also in pillar 1), as I know how to do that through the in-hand and under saddle dressage work I do. I don’t really even know what pillar 3 is lol. (And for all of you asking what the “secret” is, there, I just told you, in these last three paragraphs. It really is that simple. Celeste’s method just guides and encourages you to really seek out this relaxation and way of moving at a deeper level than you probably realized was possible.)
As someone said above, the materials are sometimes a little hard to follow, and the group is pretty free form. You can learn stuff from it, but you have to wade through a lot of “junk” posts (e.g., “look, my horse is in pillar 1!” when the horse just has its head down eating). If you have the money it might be smarter to just pay for a 1:1 with Celeste or one of her trainers. That being said, I’ve learned a lot from the group, but I could probably learn a lot more from a 1:1. I’m considering it in the future once my horse heals from the surgery and gets a little closer to being back in work.
I guess in summary: it’s a really useful perspective and I think it can help a lot of horses and their people. Is it the only way to ride? Of course not. BNTs like Sabine, Steffen, Olivia, etc. won’t need to do this since they know how to train dressage horses and likely intuitively know to address brachiocephalicus engagement early in training and engage the thoracic sling tissues. But a lot of less-experienced trainers and amateurs can almost certainly benefit from this perspective. Again, it’s not a cure-all, but I think it’s an excellent tool to keep in your toolbox.
That being said, I really hate that the group is also turning into a free-for-all for natural horse husbandry. E.g., people asking about “natural” remedies for xyz. I wish they just stuck to biomechanics questions and issues, as that is Celeste’s expertise, and why I’m in the group. But I guess I don’t make the rules
edit: forgot to add how I’ve incorporated this. At first, I did it a bit every day from the ground (horse was laid up while waiting for surgery, so not much else to do, anyway). 5-10 min max per day to teach the relaxation part. Now I don’t do it as explicitly (we’re just in the hand walking phase), but I do try to do our hand walks with the brachiocephalicus off, and keeping it off during our time together. Celeste does emphasize that at first, 10-15 min max of the work, tops. I don’t think she expects folks to stop all training while you teach your horse to turn off the brachiocephalicus. If you can, great, but I think most people want to ride, so there’s a practicality there. So I do think it’s something that could be incorporated into your day-to-day routine without disrupting your current work. I do ask my horse to turn off the brachiocephalicus when I’m with her while grooming, etc. I don’t let her stand or walk with it engaged unless there’s something that requires her to be on high-alert. (But it’s an “ask” to turn the brachiocephalicus off, not a “tell”. Once you start “telling” the horse how to carry themselves you jeopardize the brachiocephalic relaxation that is the foundation of this approach.)
caveat: I’m not a trainer, so I hope I’ve represented the BTMM correctly. Others in the group, feel free to correct me!