Why 30 weeks works and a weekend course does not. The science behind spaced repetition, deliberate practice and the coaching loop. Applicable for anyone learning something new.
Wouter Middelbos
Imagine two students. Both want to become (/en/opleidingen/personal-trainer). Student A takes a weekend course. Two intense days, everything at once, certificate on Monday. Student B follows a thirty-week programme. A bit of theory each week, a practical lesson every three weeks, months of repetition and application.
On Monday after the weekend, Student A knows more than Student B. But six months later, the picture is completely reversed. Not slightly reversed, but fundamentally. Student B does not just know more, they understand it. Can apply it. Can improvise when the situation deviates from the textbook.
That is not coincidence. That is how learning works.
Everyone has done it: the night before an exam, trying to cram everything into your head. And it works. You pass the exam. But two weeks later, everything is gone. Evaporated. As if you never learned it.
This phenomenon has been extensively researched and it is called the "spacing effect". Information you absorb in a short period is stored by your brain in short-term memory. It feels like learning, but it is storing without anchoring. As soon as you no longer need it, your brain clears it out.
Information you absorb spread over a longer period, with intervals where you forget and retrieve it again, gets anchored in long-term memory. Every time you forget something and relearn it, the connection gets stronger. Not weaker, stronger.
This is why a thirty-week programme works fundamentally differently from a two-day course. Not because it contains more hours (although that helps too), but because forgetting and relearning is part of the process.
There is a difference between doing something a hundred times and doing something a hundred times better. That difference is called "deliberate practice" and it was researched by Anders Ericsson, the scientist behind the (often misquoted) 10,000-hour principle.
Deliberate practice has four characteristics:
It targets a specific aspect. Not "I am going to coach", but "I am going to work on my cueing during the squat". The more specific the goal, the greater the growth.
It is just outside your comfort zone. Not so easy that you can run on autopilot, but not so hard that you get frustrated. That narrow zone in between is where growth happens.
There is immediate feedback. Someone watching who says: "This you did well. This can be better. This is how." Without feedback you repeat your mistakes. With feedback you correct them.
It is not fun. That sounds odd, but deliberate practice does not feel like flow. It feels like struggling. Like discomfort. Like not quite knowing how and trying anyway. That is normal. That is the signal that you are learning.
In our education we use a model we call the coaching loop. It is simple but powerful:
Step 1: Learn the theory. Online, at your own pace. Read, watch videos, complete assignments. Build a foundation of knowledge.
Step 2: Apply it. During a practical lesson. With real exercises, real situations, real pressure. Not in a simulated environment, but in reality.
Step 3: Receive feedback. From a mentor who is watching. Not afterwards, but on the spot. What went well? What can be better? How exactly?
Step 4: Reflect and repeat. Go back to the theory with the feedback in mind. Read it again. It lands differently now that you have applied it. Then back to practice. Better this time.
Every time you go through this loop, you get a bit better. Not in theory, but in practice. Not on paper, but on the floor.
Carol Dweck, psychologist at Stanford, discovered something crucial about learning. People who believe their abilities are fixed (a "fixed mindset") avoid challenges. They are afraid to fail, because failure confirms they are "not good enough".
People who believe their abilities can grow (a "growth mindset") seek out challenges. They do not see failure as proof of incompetence, but as information about what they still need to learn.
This sounds obvious, but it has enormous practical consequences. A student with a fixed mindset who scores poorly on an interim assignment thinks: I am not good at this. A student with a growth mindset thinks: I have not understood this specific part yet, how do I fix that?
The difference is not intelligence. It is the interpretation of setback. And that interpretation can be changed.
If you are considering taking a course, any course, the way you learn is at least as important as what you learn. A course that gives you everything in two days gives you nothing that sticks. A course that challenges you for weeks, lets you forget and relearn, with practice and feedback, builds something you carry for the rest of your career.
That is not my opinion. That is how your brain works.
The question is not whether you are smart enough to learn something. The question is whether you are willing to do it the right way. Slowly. Uncomfortably. With feedback. With repetition. Without shortcuts.
If the answer is yes, then you can learn anything. Literally anything.
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The sweet spot of course duration. Too short and you forget everything, too long and you lose momentum. How Milo's format is built from learning science.
