Front crawl technique: S-stroke or I-stroke?
Research suggests the S-stroke in front crawl could be effective for long distance swimmers

front crawl
Research suggests the S-stroke in front crawl could be effective for long distance swimmers
With his epic book ‘Man VS Ocean’ set to be released in the new year, 220 caught up with Adam Walker to talk swim strokes, sharks and the new Zoggs Predator range…
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