Pool / Session / Intermediate
Builds butterfly from drills to full stroke in short pieces, so the stroke stays long and relaxed.
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Drill / Intermediate / 4 × 50 m (25 m fists, 25 m open hands)
Drill / Beginner / 4 × 25 m
Drill / Intermediate / 6 × 30 s
Drill / Advanced / 8 × 15 m underwater, easy swim back