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I ask this because while doing laps I have noticed the slowest swimmers are the ones with irregular
kicking motions. Most of the poor swimmers kick only from the knees down, others "bicycle", and
still others legs appear to be shivering rather than kicking. A few stop kicking entirely when
breathing and then try to 'catch up' by jerking their legs violently.

So, would these swimmers be better off just dragging their legs behind them than using these types
of kicking motions? When does kicking stop becoming an advantage and start becoming a hindrance?

Pat in Texas