THE HALF HALT
The half-halt is a hardly visible, almost simultaneous co-ordinated action of the seat, the legs and the hand of the rider, with the object of increasing the attention and balance of the horse before the execution of several movements or transitions to lesser or higher paces. In shifting slightly more weight onto the horse's quarters, the engagement of the hind legs and the balance on the haunches are facilitated, for the benefit of the lightness of the forehand and the horse's balance as a whole.
Depending on the horse's sensitivity a half-halt can be anything from a raising of the sternum and deepening of the seat, to a firm rein aid when a horse "runs into the rider's hands" (it's actually ignoring the seat aid and running on into the hand). In the second example you *meet* the horse's mouth with a passive resistance (you don't pull, you just match the force like for like) on the resisting side, at the same time asking with the opposite leg for the horse to engage the hind leg again by stepping more underneath. Of course it isn't just hand and leg.
You *meet* the horse from your centre, by advancing your front-line to your hand. You push your tummy forward, keeping your pelvis upright and push backwards from your lumbar area (without stiffening or arching the spine, thus allowing your spine to stay in the *neutral* position) and the force that the horse is evading with is matched by the asking of the leg on the opposite side to the non allowing hand to rebalance him.
It's not a dead pull, a constant crunch of the abdominals or a prolonged squeeze with the leg. It's a series of combined aid meet-yield-meet-yield until the horse yields by transferring his weight back on to the hindquarters. This is a worst case scenario type of half halt, generally it is a much more scaled down effort that is barely visible to an onlooker.
Now here comes the technical bit! For a half halt to be effective it has to be timed correctly - it's not just a case of following the above instructions.
You have to be aware of when each hind leg is coming forward and when it's on the ground. "When it first touches down in front of the vertical, it carries, i.e. the haunches flex. That is the correct moment for the half halt. As soon as the hind leg passes the vertical, however, it starts to thrust. If you were to half halt against the thrusting leg, the horse would brace against you and either go against, above or behind he bit. If you half halt when the leg is in the air, you would shorten the stride and prevent the hind leg from stepping under. It would have to set down prematurely, maybe not even reaching the vertical, much less reaching in front of it. That way, the carrying phase would be shortened or even made impossible. The result would be loss of balance and relaxation not to mention collection." (Dr Thomas Ritter).
It may help if you think that when a grounded front leg passes the vertical, the hind leg on the same side is advancing in the air. Any rein action now will block the hind leg and force it to set down too early and the horse will not step under far enough.
I hope you haven't given up on Classical Riding yet! It is a thought provoking, time-consuming, no guarantees of instant success process. Many people want to be told that the problem is with the horse and that the horse needs *fixing* and they have a lesson expecting to be shown how to do what they already do better. Usually though, I find it's the rider that has to make the change and when you've ridden a particular way for years it takes a good deal of self discipline to go back and start again almost from the beginning. But OH ! that feeling you get when the horse does something so wonderfully light and correct with only the smallest aid. He did it because you knew what you were expecting him to do and you knewhow and when to ask him.
Almost every book you open will give a different description of how to ride a half-halt, but I think we all agree what a half-halt is:
A pause, a comma, a rebalancing, a signal that something is about to happen. It is what it says it is; you tell the horse to halt and in doing he begins to lower his haunches. At this point, before he stops, changes gait, you apply the forward driving aids and he moves off with he's hind legs more engaged than before.
As with all writing on riding, it is coming from the author's starting point. We are attempting to show you the way - you are to discover for yourself what it is you have to do to achieve a clear, correct response. While the nuances may vary of how much you need to use each muscle; how much push you need, the principle will remain the same. Each Half-Halt will differ from the last one and the next one; the development of your ability to ?feel? will tell you how much is required.
My perception of what I actually do is:
Pull down with the muscles in my back and front line and push back with the muscles around the sacroiliac joint and forwards with the abdominal muscles located below the navel. This is the " hard work to sit still" that gives a rider that elegant look of doing nothing. Rather like a swan; wonderfully graceful on the surface, but paddling away like anything underneath!
Another way of looking at it, which may make more sense to other people, is how Erik Herbermann explained it at a clinic I audited last year. He said: To think of "tipping the chair". Take one of those plastic picnic chairs or a lightweight straight-backed dining chair.
Sit on it so that your feet are either side of the front legs, underneath your base of support as if in the saddle. Rest your seat bones on the very edge of the seat, with a vertical pelvis. Now try to tip the chair forwards onto the front legs BUT only using your abs / lumbar muscles. It is very easy to cheat and use the seat bones - DON'T! Instead, make that extra effort and you will be rewarded.
"Every horse has to learn to maintain by himself
the rhythm that the rider has determined. At the same time he has to
listen to the rider every step of the way, in case the latter wants
to make changes in gait, rhythm, stride length or direction. The trained
horse allows the rider to modify rhythm and stride length with his abdominal
muscles, while the adductor muscles of the thighs help to transmit the
seat aids to the hind legs. The rider's hand receives what the hind
leg places into it, but it has to release this impulse almost immediately,
either forward- upward or forward-downward. The sequence of the aids
is the same as above: