Low-key Aerobic Freestyle Set

2 thoughts on “Low-key Aerobic Freestyle Set”

1. Nice workout – What is ” Get:10: hr ” and “4dr” ?

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   1. :10 HR means check your pulse and count your heartbeats for ten seconds. “4DR” is 4 dolphin rule, which means that swimmers must take 4 dolphin kicks off every wall.

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