A few weeks ago I published a video breaking down the Cossack Squat from scratch.
I explained why it matters for grapplers, what most people get wrong, and a six-step progression to earn the full position before loading it.
If you haven't watched that one yet, start there. The link is here. Everything in this article assumes you can get into a proper Cossack position without compensation. If you're forcing the range, loading it will only reinforce the problem.
But if you've done the work and the position is starting to feel like yours, this is the next step.
WHY THE COSSACK SQUAT IS ONE OF THE BEST MOVES FOR BJJ
Before we talk about loading, it's worth understanding why the Cossack deserves a permanent place in your program in the first place.
Most lower body training happens in the sagittal plane. Squats, deadlifts, lunges, and most traditional exercises live there. The Cossack moves you laterally.
It loads the frontal plane, which is the direction jiu-jitsu constantly takes you into and the direction conventional training almost entirely ignores.
The position itself shows up on the mat constantly. Knee cuts, knee pins, guard play, passing, transitions...these all involve deep, asymmetrical lateral positions that your body needs to be strong and comfortable in.
The Cossack builds single leg strength through deep hip and knee flexion, hip mobility and adductor resilience through the extended leg, and lateral movement capacity that transfers directly to how you move on the mat. And it does all of this simultaneously, not as separate outcomes from separate exercises, but in the same rep.
That's what makes it time-efficient and high-value. One movement, multiple qualities trained at once.
WHY YOU SHOULD LOAD THE COSSACK SQUAT
The bodyweight Cossack earns and begins to own the range. Loading it makes that range durable.
This is the earn it, own it, load it principle in action. When you add a kettlebell or a heavy club to the Cossack, you are no longer just accessing the position, you are building genuine strength through it.
Your nervous system gets a clear signal: this range is not just accessible, it is strong. It can be trusted under real demand.
That's the difference between flexibility and resilience. Flexibility gets you into the position. Loaded mobility keeps you safe when someone else tries to put you there against your will.
THE TWO BEST TOOLS FOR LOADING THE COSSACK SQUAT
In this week's YouTube video I walk through loading the Cossack with both a kettlebell and a heavy club. While they are similar, they are not interchangeable, as each one adds a different stimulus.
But more load is not better. Better range under more load is better.
If adding a kettlebell or club causes your heel to come up, your torso to collapse forward, or your hips to shift sideways, the load is too heavy.
Start with a weight that lets you maintain every degree of the range you built in the progression work. Be able to get rock bottom without compensation, then start to load it heavy.
That's what builds resilience and that's what transfers to the mat.
FINAL THOUGHTS
If the full Cossack position still feels restricted with tight adductors, heel coming up, hips shifting then go back to the progression video first.
Use the mobility drills to loosen the hips, adductors, and groin so you can earn the position before you load it.
In fact, I return to those drills regularly before weight training and rolling.
But when you're ready, start to load the Cossack to take the benefits and ultimately your resilience to the next level.
WHENEVER YOU’RE READY, THERE ARE 4 WAYS I CAN HELP YOU:
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