Discover how repetition and variation influence the learning of movements. Learn to adapt your technique and progress effectively.
Published on July 12, 2026
Take someone and have them repeat the same gesture a hundred times, in the same place, at the same speed. After an hour, they will have become excellent.
Excellent at repeating that gesture, under those conditions. And often nowhere else.
You probably did it, in good faith. The gesture becomes clean before your eyes, so you think it's starting to sink in.
Then the person changes context, a slippery field, an opponent, a day of fatigue, and the beautiful gesture evaporates. We blame it on stress, or on lack of training. The problem was already there, in the way of repeating.
A Russian physiologist, Nikolai Bernstein, summarized this more than fifty years ago with a formula that seems absurd and is just: repetition without repetition.
An expert tennis player never throws, hits exactly the same way twice. Their intention remains the same, to reach the target on the field, but the solution changes with each attempt, depending on fatigue, angle, wind.
What the body retains is not a copy of the gesture, but a flexible rule, capable of adapting to the situation. And this rule is built only by varying.
I owe you a nuance, because I'm not selling a miracle recipe. This effect of variation is very clear in the laboratory.
On the field, with complex gestures, it is more discreet, and it depends on how we vary.
Varying does not mean creating disorder: it is keeping the intention fixed and moving everything else around.
Concretely, a session that teaches consists of different problems, not the same problem a hundred times.
We change the angles, distances, speeds, surfaces, without ever losing sight of the goal. The person hesitates a bit more, succeeds less beautifully in the moment. That's a good sign. They are searching, therefore they are learning.
There remains one thing that variation alone does not solve. Varying forces the body to search, but it still needs to perceive the important information correctly.
If a sensory system reads poorly, the person can vary for hours without ever finding the right solution.
This is where the RNP, the Neuro-Postural Reprogramming, our movement reading framework, comes in: it identifies where the body is in the dark, and provides the missing information, so that its search finally leads somewhere.
We laid out this framework in an introduction offered to the RNP system.
Whether you train athletes, support children, or seek this for your own body, it's the right starting point.
A gesture anchors when it is solved differently each time, not when it is repeated identically.
👉 I want to vary correctly, not randomly!
The LabO-RNP team

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