Why Practice at Really Slow Tempos?
Swimming at slower-than-comfortable tempo you will challenge your ability to maintain balance, stability and streamline.
It will expose weakness and limitations in your skills that are still present when you swim at your normal tempo, but you may not be aware of how those weaknesses are affecting you. Working at extremely slow tempos will make you aware of those weaknesses and give you the opportunity to improve them. It will create even more ease for you at your normal Tempos.
It is not recommended that you swim often with extremely slow tempos because this can put a strain on your joints – some people try to increase the power of each stroke and distort the extension of the body to squeeze more distance per stroke – but if you do this occasionally, and for short periods of time, you can make some important observations and see where you need to work on improving control in balance, stability or streamline skills.