Steve Magness Profile picture
Sep 5 9 tweets 2 min read Read on X
Charlie Parker said: “Learn your instrument. Practice, practice, practice. Then forget all that and just wail.”

Neuroscience shows he was right.

Researchers found that jazz musicians and freestyle rappers train their brains to quiet the inner critic and turn up self-expression when they perform.
When jazz musicians improvised inside an fMRI scanner, something fascinating happened.

The dorsolateral prefrontal cortex—the “inner critic” that evaluates, monitors, and second-guesses—went quiet.

Meanwhile, the medial prefrontal cortex, a critical part of creativity and self-expression, lit up.
Freestyle rappers showed the same pattern.

When rhyming on the fly, they dampened brain areas linked to self-monitoring.

The neural chatter of “Is this right? Am I messing up?” turned down.

Instead, brain regions tied to language, rhythm, and creative flow switched on.
For the rest of us, when we try to improvise our brain often does the opposite.

The inner critic dominates.

We overthink, hesitate, or freeze.

Thinking gets in the way of doing.
Experts learn to step aside.

They’ve trained enough that when the moment comes, they can loosen control.

They move from reflective to reflexive.

They trust the system they’ve built through practice and allow it to run.
That doesn’t mean they wing it.

Jazz greats and rap legends aren’t improvising from nothing.

They’ve drilled scales, rhymes, rhythms, and progressions endlessly.

Practice loads the system. Letting go unlocks it.
This is why false bravado backfires.

You can’t just “believe” your way into flow.

If the foundation isn’t there, the brain knows.

Confidence that lasts isn’t about faking it. It’s about having enough evidence in your body and mind that you can release control.
Real performance is a paradox: you prepare obsessively, then you let go.

You build the scaffolding, then step out into open space.

You learn to quiet the voice of judgment so the work you’ve built underneath can finally speak for itself.
The musician’s brain teaches us this: Creativity isn’t about thinking more or trying harder during the performance.

It’s about preparing deeply, then trusting yourself enough to let go.

Practice, practice, practice—and then just wail.

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More from @stevemagness

Sep 3
In the 1960s, psychologist Diana Baumrind mapped parenting styles.

Most parents fell into 3 camps: too soft, too hard, or “just right.”

Authoritarian parents—the “too hard” camp—believed fear built discipline and toughness

But decades of research says the opposite. And we make the same mistake in sports.
Baumrind found that parenting could be plotted on two dimensions: responsiveness and demandingness.

Responsiveness = how attuned and supportive parents are to a child’s needs.

Demandingness = how much structure, discipline, and expectation they impose.

Combine the two, and you get distinct styles.
Low demand + high responsiveness? Too soft.

The permissive parent, who lets a child get away with anything.

High demand + low responsiveness? Too hard.

The authoritarian, who rules by fear and control. The “because I said so” parent. The one who equates harshness with discipline.

Both lead to issues.
Read 9 tweets
Aug 31
The U.S. Navy studied 2,000 SEAL candidates to find what predicted survival in Hell Week.

Not strength. Not agility. Not size.

The best predictor? A 4-mile run.

The faster you ran, the better your odds.

But the reason why goes deeper than endurance.
For decades, the military has tried to decode the “secret sauce” of those who survive.

Strength? Size? Mental grit?
Research has been mixed.

When I asked a former SEAL, he told me: “I thought the football types would thrive. But it was the endurance athletes—rowers, swimmers, runners—who made it more often. They knew how to suffer alone, in their own head.”
A large study of candidates showed he was on the right track.

The best predictor of Hell Week success wasn’t max strength, speed drills, or agility tests.

It was a 4-mile run.

Run slower than 28 minutes? Less than 8% survived.
Run under 24 minutes? Success rate climbed to 35%.
Read 9 tweets
Aug 30
In a study of 5,500 Swedish adolescents, researchers found something striking:

School stress wasn’t just about workload or competition.

It was driven by fear of failure.

Nearly 40% of the link between ambition and stress was explained by this dread of falling short.

It’s the thought “What if I fail?” that magnifies the stress.
It's the tricky part about drive.

A kid dreams of getting into a top university.

That dream motivates hard work.

But alongside it grows a shadow: “If I don’t make it, I’ll disappoint everyone...and myself.”

That fear becomes a second load to carry, heavier than the workload itself.
The study shows what many of us feel: ambition can fuel growth, but it also plants seeds of anxiety.

When expectations are high, the stakes feel existential.
Failure doesn’t just mean missing a goal—it feels like a threat to identity.

And our nervous system treats that threat like danger.
Stress skyrockets, not from effort, but from meaning.
Read 9 tweets
Aug 25
Being 80% all the time beats being 100% half the time.

We love the idea of going all in: perfect effort, flawless execution, max intensity.

But perfection is fragile.

It burns hot, then flames out.

Consistency, not occasional perfection, is what compounds into greatness.
Think about training.

Anyone can smash one “perfect” workout.

But what matters is not what you do once. It’s what you repeat.

A solid run every day beats a heroic one followed by three days of exhaustion.

Progress is built on showing up.
The same holds true outside of sport.

Writing one perfect paragraph means little if you never write again for weeks.

A single all-nighter doesn’t outweigh weeks of consistent studying

Parenting, relationships, creativity—they’re all consistency sports.

Better to be present and steady than perfect and absent.
Read 8 tweets
Aug 24
Much of what you’ve been told online about fitness and training is wrong.

High intensity isn’t everything.
Zone 2 isn’t magic.
VO₂max isn’t destiny.

Let’s bust some fitness myths…
1. High Intensity Training gives you all you need.

False. It’s one path. But it isn’t pert plus...

There’s always overlap in adaptations. Every intensity of exercise works. But none give you everything, or close to it.

And intense training works best when it’s preceded by lots of easy and moderate. It’s the icing on the cake. Not the main dish.
2. The “Norwegian” 4x4 min is the best way to improve VO2max.

Nope. It’s one workout that does an okay job. There are a 100+ other workouts that would do the same or better job.

It’s best to stop looking for a magical workout.

Instead, learn how you modify the workout (speed, rep length, recovery, pacing, etc.) to provide a stimulus to adapt.
Read 10 tweets
Aug 16
When you get good at something, the world rushes to put you in a box.

“The runner.” “The musician.” “The whiz kid.”

Labels feel flattering, then quietly become cages.

You start optimizing life around protecting the label instead of growing as a person.

That’s the trap: achievement narrows identity, and a narrow identity is fragile.
It leads to what researchers call Identity foreclosure.

When we stop exploring who we are, and cement around a particular construct.

Early success accelerates this process. When the rest of your friends are dabbling and trying different things in school...you are already exploiting your talent.

At first, the cost is invisible. It's nice to be known as something. But over time, it leaves you stuck with the sense of self you developed as a 15 year old.

Before long, your worth rides on one scoreboard.
Fragility shows up when the inevitable wobble comes.

A bad race, a missed promotion, an injury, a flop.

If your entire self sits on one pillar, any crack feels existential.

Now the goal isn’t to grow; it’s to protect the image at all costs.

Performance suffers because fear replaces curiosity.
Read 8 tweets

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