Most butterfly sets destroy timing instead of developing it. If...

One arm butterfly and head up butterfly allow swimmers to feel great timing skills.
First, we strip it down so they can lock in:
Kick when the hands enter, kick when they exit.
Every section turns up the pressure, but the emphasis on timing stays the same.
As the work gets harder, the pattern stays consistent.
More skill, better fitness, faster racing.
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And that means potentially compromised body position and increased drag.
Rather than trying to ‘teach’ swimmers how to influence their hip position, simply have them wear a small weight belt.
