You may not know this but nearly everyone's freestyle stroke has 'sweet spots' in it at certain stroke rates (strokes per minute). These are strokes rates where your efficiency is higher, meaning you move more quickly though the water for the same effort. Even if you swim regularly with a Wetronome you may not realise where these sweet spots lie.
Read our full article on the test here: Stroke Rate Ramp Test
Or jump ahead and watch our demonstration video right way.
Even those who don't own a Wetronome will find this interesting to watch!