If you look up «ambidexterity» in a dictionary you find roughly this: the ability to use both hands with equal skill. It’s not a wrong definition. It’s just where everyone stops — a photograph of the surface. It says what you’d see from outside, and stays silent on everything else: how it actually works, what it gives you, what it costs you. It’s worth going deeper, because that’s where ambidexterity stops being a circus trick and becomes something about your body, today.
The definition
Two hands, equal skill
Let’s start from what’s true. An ambidextrous person uses both hands well: cuts with scissors on either side, throws a ball with the right or the left, turns a key in a lock with one hand or the other without thinking. The dictionary definition describes exactly this, and describes it correctly. The problem isn’t that it’s false: it’s that it stops at the hands. It looks at the two points at the end of the arms and concludes that, if they’re equally skilled, the story is over. But the hands are the last link of something much longer — and that something the definition doesn’t even name.
The body
There are no two hands, there is a body
Picture a boxer in a left guard throwing a straight punch. The force isn’t born in the hand: it starts from the right foot pushing into the ground, rises up the leg, crosses the pelvis and torso diagonally, arrives at the left shoulder and only at the end at the fist. The hand is only the point where that chain touches the target. If the chain doesn’t load, the most trained hand in the world hits nothing. Skill doesn’t live in the hand: it lives in the chain that moves it.
This is why «two equal hands» is a deceptive measure. You can have a quick, precise left hand and still be unable to deliver force to it, because the diagonal that should carry it there — right leg, torso, left shoulder — doesn’t switch on. The body works in crossed chains, not separate pieces. Judging the two sides by the hands alone is like judging a bridge by the two pylons at its ends, ignoring the cables that hold it up.
Advantages and costs
The two sides aren’t equal: they’re complementary
There’s a second misunderstanding hidden in the definition: the idea that «equal skill» means identical. Movement neuroscience tells another story. According to the complementary dominance hypothesis (Sainburg), the two sides don’t do the same thing: they split the work. The dominant side is better at governing the trajectory, at giving direction and speed; the other is better at stabilizing, at holding position against a disturbance. They’re not two copies: they’re two specialists.
This changes the meaning of the advantages. Developing the weak side has concrete, measurable benefits: more adaptability (you can kick, strike, grab from the side the situation demands), less chronic overload — because you stop dumping everything on the same side — and, in sport, an unpredictability worth gold. A striker who scores with both feet is twice the problem to mark.
But this is also where the cost no dictionary mentions is hiding. If by «becoming ambidextrous» you mean making the two sides equal in everything, you risk switching off the very specialization that gives you efficiency. That’s why the classic image — learning to write with the other hand, the circus trick — is misleading: turning the non-dominant hand into a bad copy of the dominant one is of no use. The real goal isn’t symmetry. It’s something else.
What it really means
From equal skill to choosing the side
Here’s the decisive shift. The ambidexterity worth seeking isn’t a state — «I have two equal sides» — but an operation: being able to choose which side to engage, instead of suffering the one habit has decided for you. We call it elective lateralization: not abolishing dominance, but making it electable. You keep the specialization of the two sides and gain the freedom to combine them as needed. The earlier cost disappears, because you’re not flattening anything: you’re adding a choice.
You reach this choice by two paths, which Bilateral Education distinguishes carefully. The additive path builds the missing ability by training the weak side at the same task as the strong one — a footballer’s weak foot that, strike after strike, learns the shot. The subtractive path does the opposite: it doesn’t add, it removes. It releases a symmetry that is already there but stays mute, because a chronic tension holds it locked. The two paths don’t exclude each other: first of all they need the same thing — that the side be connected, part of a chain, and not merely present.
It’s not about having two equal sides, but about being able to choose which side to be — strike after strike, gesture after gesture.
The distinctions
Ambidextrous, left-handed, mixed dominance
Three words are often confused. A left-hander is not ambidextrous: they have a clear dominance, simply reversed compared to the majority. Mixed (or crossed) dominance belongs to those who use one side for some things and the other for others — write with the right but kick with the left — almost always without having chosen it: it just turned out that way. Elective ambidexterity, instead, imposes no side and leaves nothing to chance: it puts the choice in your hands. The difference isn’t how many things you can do with each side, but whether you know you can choose.
And, to clear the field of one last widespread idea: it’s not a gift for a chosen few. The vast majority of people can develop bilateral competence. You’re not born ambidextrous: you become it — and that’s exactly the subject of the next article.
Try it
The full spoon
The difference between «an unable hand» and «a chain that doesn’t load» can’t be explained: it has to be felt. Here’s a one-minute experiment that needs nothing but a spoon and a little water.
- Fill a spoon with water to the brim and set it on the table.
- With your non-dominant hand, lift it and bring it slowly to your mouth, trying not to spill a drop.
- Notice where you feel the effort. It’s not in the fingers: it’s in the trembling wrist, the stiffening forearm, the shoulder that lifts to compensate.
- Now do the same with your dominant hand and compare.
The hand itself knows perfectly well how to hold a spoon. What’s missing on the other side isn’t the skill of the fingers: it’s the chain — shoulder, arm, wrist — that doesn’t organize itself to support them. You don’t have two more-or-less able hands: you have two chains more-or-less ready to load. And it’s on the chains that you work.
Where to go from here
The definition was the door, not the room
If you’ve made it this far, you’ve already taken the hardest step: you’ve stopped thinking of ambidexterity as two equal hands and started seeing it as a choice that runs through the whole body. The definition was the door. The room — how this choice is actually developed, by which paths and which exercises — is the next step. If you want to know where you stand right now, the side test tells you in a minute; if you want the full picture, there’s the method.
From definition to practice
Your body already has two sides. The method teaches you to choose them.
Understanding what ambidexterity is is the first step. The second is feeling it in your own gesture — and for that there’s the method, and, if you like, a session together.