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Butterfly is quite known as a good excersise

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Butterfly is quite known as a good excersise

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It uses core,arms and leg muscle

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It excercises Your core, arms and legs

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The butterfly is a swimming stroke swum on the breast, with both arms moving like a windmill simultaneously.

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Improve your butterfly swim technique with our series of Speedo Fit videos - created with an elite swim coach to help you get more from your swim. Using a combination of underwater, above, front, side angles, slow motion and animations to capture the best angles for learning butterfly swimming technique.