Swimming
Butterfly Streamline Dolphin Kick
The butterfly streamline dolphin kick is a swimming drill that uses a small body wave and both legs together to propel you forward. It trains kick coordination and core control with your arms extended overhead.
- Intermediate
- Moderate injury risk
- Rest 45 sec
How to do it
- Place your feet against the pool wall with your body facing down the lane.
- Extend your arms overhead with one hand stacked over the other.
- Push off gently into a face-down glide at the surface.
- Begin a small downward wave with your chest.
- Let the wave travel through your hips into a downward kick with both legs together.
- Return your legs upward with a slight knee bend to prepare for the next kick.
- Continue the wave-and-kick rhythm for your chosen distance.
- Switch to an easy swim to finish at the wall.
Form cues
- Keep your head between your arms.
- Let your ankles stay loose.
- Keep the wave small.
- Exhale gently into the water.
Common mistakes
- Kicking only from the kneesStart the motion higher in your body so your feet follow your hips rather than pedaling.
- Forcing a rigid streamlineReach only as far overhead as you can without arching your lower back.
- Pausing after each downward kickLink the downward and upward phases into a smooth rhythm rather than separate bursts.
Safety
Fatigue or prolonged breath-holding can lead to inhaling water or drowning. An exaggerated body wave or forced overhead position can irritate your lower back or shoulders.
- Practice in a lifeguarded pool with a clear lane and an accessible wall.
- Break streamline to lift your face fully clear for a breath whenever needed; never hyperventilate or turn the drill into a breath-holding challenge.
- End the drill while you can still swim comfortably to the wall.
- Stop if you develop shoulder or back pain, dizziness, or unusual breathlessness.
If you cannot comfortably float face-down and swim back to the wall, learn those skills first; seek physiotherapist advice if overhead reaching causes pain.
Muscles worked
Primary muscles
Secondary muscles
Equipment
- Pool Lane Line (optional)
Sets and reps
- Sets
- 4–6
- Target
- 10–15 meters
- Rest
- 45 sec
Treat each distance as technique practice with breathing breaks, not an uninterrupted underwater effort.