説明
Open water drill 12
This article is like the Bible of open water , after you succeed in all 20 trio open water drills you can call yourself an advanced open water swimmer:
https://www.swim-west.com/trio-open-water-drill/
If you have pain in your neck, lower back or you want to improve your swimming speed , first start with improving your swimming technique and learn how to swim WEST- swim according to your flexiblity and abilities
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