Undulation (1980)

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2 Different Types of Undulation in Butterfly - Swim Like A Fish

Undulation = speed. ⚡⚡ Here are five quick tips for how to improve dolphin kick undulation. Undulation is a non-negotiable for a fast UDK. It creates a bigger “whip” at the end of the kick, increases toe velocity, reduces drag, creates bigger vortices, and leads to faster underwaters. Here’s how to build a buttery smooth undulation: ✅ Increase thoracic spine mobility (e.g. Cat Cow stretch, spinal flossing) ✅ Sequence the kick properly (Core > Hips > Knees > Ankles) ✅ More core engagement (increa

Use Daily Undulating Periodization to Force New Muscle and Strength Gains | BarBend