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It’s CSS Test Week! ????‍♀️????‍♂️????‍♀️????‍♂️ If you don’t know already, your CSS (Critical Swim Speed) is your threshold pace when swimming. Roughly the pace you can swim a flat out 1500m and a single number which you can base all your training intens

by uoft_tri_club · 7 years ago · via Instagram

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