"Your weakness is your strength! Cliche? Yes, but like many cliches, this maxim contains an element of truth, since every imperfection presents an opportunity for improvement. And when it comes to swimming, ironing out wrinkles in your stroke can yield huge dividends in terms of improved efficiency and lowered splits.
What's more, regardless of your level of proficiency in the water, there is always room for improvement, so even the most talented swimmers can improve by continually tweaking and refining their strokes."