I ask, deep pools, the starting stage, diving into the water, learning, generally step is how are we

First practice of what to practice what is, what is the final practice. . .

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first necessary to toe on the starting platform outside, and then knees (very critical), the next step is the center of gravity forward, when the center of gravity in a pond within the article sets out the starting time to tread, go out when the legs to keep straight