ENG) 이현진 수영/ butterfly swimming drill / how to butterfly stroke /접영 연결동작/접영호흡/접영드릴/이현진 수영
접영할때 호흡안하면 잘나가는 느낌이 드는데 호흡만 하면 끊기는 느낌이 난다! 그렇다면 요 드릴을 해 …
수영강습
How to swim freestyle faster. Drills with snorkel
Exercises for Freestyle swimming are very important. I …
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