New Rule Alert! You can now swim underwater the last 5 meters of backstroke race. But should you?[英语][Skills NT]

https://www.youtube.com/watch?v=c6dvg5VTNyI

关于 Skills N' Talents

We are two brothers who swam for 30 years in the competitive arena (15 years each) and we hope we can transmit our knowledge as clearly and simple as youtube allows us to.

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