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From Openwaterpedia

noun - Interleaving is a way to arrange memory in a non-contiguous way to increase performance in the fields of computer science and telecommunications.

In athletics and open water swimming, interleaving is an approach that stresses the use of the body and mind in a non-contiguous way to increase mastery of skills, help in motor learning, and improve memory recall.

Interleaving for open water swimmers includes alternately pulling, kicking, stroke work, sprinting, and distance sets in a workout. It incorporates the use of different strokes and individual medley sets, working on pacing, navigating, positioning, feeding, sighting, dolphining, and drafting in a workout, performed in a pool and an open body of water. It also includes ins-and-outs and body surfing if workouts are performed at the beach, and leap frog sets and pace line sets in lake swims or in pools with other people. It includes training in the morning during tranquil conditions as well as training during windy afternoons where surface chop is a constant nuisance. It includes doing prime number sets, and sets in descending or ascending intervals. It includes doing different kinds of dryland training interspersed within a swim practice as well as pull-outs, POW (Pool Open Water) training, vertical kicking, and dolphin drills.

Interleaving stimulates stress that then leads to the secretion of corticotropin-releasing factor (CPF) in the brain’s hippocampus where memory and learning are centralized and improved.

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