A swim-set design pattern surfaced in a conversation about a post-meet recovery session for a 10–15 year-old squad at Mountain Creek Aquatic Center (squad size ~15, 50 free times 33–40s, used to 3km sessions). The set is the artifact; the pattern is what's reusable.
Both blocks share the same underlying principle — demand the right thing, not more of the thing. The drill block asks swimmers to perform a small set of movements correctly.
This is the kid-squad instantiation of Deliberate Practice Cognitive Load: the practice has to target a specific component of performance, the learner has to attend to it, and feedback has to be immediate. Counting strokes on catch-up drill = feedback.
** Each round is a deliberate demand increase, not a flat volume block. The structure forces bilateral breath control and teaches breath management under increasing metabolic load.
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