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自由泳又称爬泳，做为游泳者，
最希望的是能够以标准的姿势快速的在水中前进。
然而，事实却是学了很久，
和理想的状态相去甚远。
这个视频全面的讲述了自由泳的诀窍，
建议有时间的时候看一下原文视频。
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打腿，
是传统游泳教学中老生常谈的重点，
打腿可以提供身体的稳定的动力，
是每一次划臂的基础。
菲尔普斯的教练告诉大家，打腿，
不是小幅度而散漫的打腿，
而是有规律大量的练习，
并且要持续练习。
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打腿有两种情形，
一种是专业运动员的快速冲刺所需要的强有力的6次腿，
另一种是远距离型的2次打腿。
而不管是那种打腿方式，
都要通过持续不断的练习来维持，
不知道你做到了每天
在水中打腿一个小时以上，
每周坚持至少5天嘛？！
质量互变，成功没有捷径。，