Discovering Flow in Butterfly Stroke

The Skill of Finding it EASY

How to Swim Butterfly

Understanding the Movement Before the Technique

Finding Ease, Rhythm and Flow in the Water

Butterfly is often seen as the most demanding stroke. From the outside it looks strong and dramatic so many people assume it must be powered by force. Yet when learned well, butterfly is not about pushing hard at all. It is about rhythm and body coordination with the movement flowing from the centre of the body. When the body works as one piece the stroke feels surprisingly smooth.

The Movement Begins in the Centre of the Body

The core is where butterfly starts. Not as a stiff brace but as a steady centre that helps the spine move in a gentle wave like the way dolphin moves in the water. The chest lowers slightly into the water which allows the hips to rise. This is a small movement but it sets the pace for the whole stroke. From there the body lifts again, naturally and without force.

The rhythm is:

  • soften into the water

  • rise again

  • return to neutral

It is quiet, controlled and continuous.

The Legs Follow the Body, They Do Not Drive It

The legs are not kicking in a separate action. They follow the wave that begins through the chest, abdomen and hips. The knees bend slightly only because the body is moving in a soft curve. There is no need for a powerful or fast kick at the beginning . When the movement starts in the centre, the legs simply go with it. This is why butterfly becomes easier when the core is engaged and active.

The Arms Work With the Rhythm, Not Against It

The arms do help lift the swimmer in butterfly. The lift happens when the hands press the water down and all the way back toward the feet. This guiding movement supports the chest and upper body to rise without strain. Once the body has lifted, the arms then recover forward over the water to begin the next stroke. This forward movement should feel open and relaxed across the shoulders.

So the rhythm is:

  1. Press down and back ….. the body lifts

  2. Arms travel forward over the surface……ready for the next stroke


It is a steady and repeating pattern that feels more fluid than forceful. When the core stays active, the arms feel connected to the rest of the body rather than working alone, which makes the stroke easier to sustain.

Breathing Without Breaking the Flow

Breathing fits into the natural rise of the movement. The head only lifts as much as needed to clear the mouth.The inhale is quick and calm. The exhale is slow and gentle underwater. When the breath is relaxed the stroke stays smooth. The moment the breath becomes urgent the stroke begins to feel heavy.

Pace Matters More Than Power

Butterfly becomes tiring when rushed. It becomes manageable when the pace is steady. You do not need to move fast. You only need to keep the rhythm from breaking. The smoother the rhythm, the easier the stroke.

Learning Butterfly Comes Gradually

Butterfly does not have to be mastered in one go.
Most swimmers learn it in layers:

  1. First the body wave

  2. Then breathing

  3. Then the timing of the arms

When the body recognises the pattern the stroke becomes natural.

At NAGER London we have found that when butterfly is taught with focus on rhythm and body organisation rather than effort, most swimmers become comfortable with the stroke within around 3 focused hours of guided practice. The body learns the pattern and continues to refine it with time. In essence butterfly is not a test of strength.It is a rhythm. The core begins the movement. The spine carries it through the body. The arms and legs follow. When approached with patience and curiosity, butterfly becomes not only possible but enjoyable to swim with steady, fluid and continuous movement. Happy Learning !

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