强调做单双交替练习时,在整个过程中,不管单臂还是双臂时,躯干一定要保持连贯稳定的身体节奏.
(Notice the nice steady rhythm that Michael uses in doing this drill. He's able to maintain very good consistency within the single and double arm stroke. Control of the torso and body can be developed in the following drill. )
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