Here’s a truth that took me years to really internalize: you can’t stretch your way to suppleness.
If your horse can’t hold a 20-meter circle without falling in, doing more circles won’t fix it. If they’re heavy in your hands at the canter, lighter contact won’t solve it. If they’re crooked on the centerline, you can straighten them a thousand times and they’ll still drift.
Because the problem isn’t training. It’s fitness.
Suppleness Requires Strength
When we talk about a supple horse, we’re really talking about a horse who can:
- Bend equally in both directions
- Step under with the hind legs
- Carry themselves in balance
- Yield to the aids without bracing
Every single one of those things requires muscle. Not just any muscle — the right muscle, developed through correct work over time.
A weak horse can’t maintain bend because they don’t have the core strength to support it. They fall in on circles because their outside shoulder muscles can’t hold the shape. They get heavy in your hands because their topline isn’t strong enough to carry their own head and neck.
This isn’t a training problem. It’s a fitness problem wearing training clothes.
The Gray Area: Weak vs Resistant
This is where things get tricky.
A horse who braces through their back might be:
- Genuinely resistant and needs clearer training
- In pain and needs a vet
- Simply too weak to do what you’re asking
All three look similar from the saddle. All three require completely different responses.
Here’s how I think about it:
Signs it might be weakness (not resistance):
- They’re better at the beginning of the ride, worse at the end
- They can do it occasionally, just not consistently
- They’re trying but physically losing the shape
- They improve with rest days rather than more drilling
Signs it might be a training gap:
- They’re inconsistent but not tired
- They’re better in some contexts than others (arena vs trail)
- They have a pattern of avoiding specific things
- They improve with clearer aids, not just rest
Signs it might be pain:
- Sudden changes in behavior
- Resistance that doesn’t improve with correct training OR rest
- Asymmetry that’s getting worse, not better
- Check the Horse Grimace Scale and trust your gut
Building Fitness the Right Way
If your horse needs more strength before they can be more supple, here’s how to build it without burning them out:
1. Hill Work
Nothing builds a topline like walking up hills. The hind legs have to engage, the back has to lift, and you’re not asking for anything complicated in terms of training.
If you don’t have hills, slight inclines count. Even transitions on flat ground build the same muscles — just slower.
2. Ground Poles
Poles make your horse pick up their feet, engage their core, and think about where their body is in space. You get physical conditioning plus proprioception in one simple exercise.
Start with raised walk poles. Graduate to trot. The goal isn’t speed — it’s lift and awareness.
3. Transitions, Transitions, Transitions
Walk-trot transitions are underrated core work. Every upward transition requires the hind end to push. Every downward transition requires the hind end to carry.
Do them correctly — forward into the transition, not falling onto the forehand — and you’re building exactly the muscles your horse needs for suppleness work.
4. Rest Days That Actually Rest
This is where a lot of riders (myself included, for years) get it wrong.
If your horse is getting fitter, they need recovery time. Real recovery. Not “easy rides” where you still ask for bend and connection. Actual turnout, ground work, or total days off.
Muscles build during rest, not during work. The work creates the stimulus. The rest creates the adaptation.
How Long Does It Take?
Longer than you want. Shorter than you fear.
If your horse is genuinely weak, expect:
- 2-4 weeks to see them feeling easier in the work
- 6-8 weeks to see visible changes in muscle
- 3-6 months to have fitness that supports real suppleness work
This assumes correct, consistent training 4-5 days per week with appropriate rest.
If you’re coming back from time off — injury, winter break, life getting in the way — add more time to that timeline. Fitness takes longer to rebuild than it does to build the first time.
The Good News
Once your horse has the fitness to support suppleness, everything gets easier.
The circles that used to fall apart will hold themselves. The bend that used to require constant correction will feel natural. The collection that seemed impossible will become available.
You’re not asking more of your horse. You’re giving them the strength to do what they already wanted to.
It’s not magic. It’s muscle.
Want a structured approach to building suppleness in your horse? Check out From Stiff to Supple in 28 Days — my step-by-step program for transforming your horse’s way of going.
