on the goggle strap or under your swim hat, emits a beep to help regulate your stroke.] “Use the trainer in the pool first for measurement and to find your rhythm,” says Johnson.“Set your trainer for a higher tempo so you have a higher turnover for speed. When
or under your swim hat, emits a beep to help regulate your stroke.] "Use the trainer in the pool first for measurement and to find your rhythm," says Johnson. "Set your trainer for a higher tempo so you have a higher turnover for speed. When you hit
