If you have ever tried and failed to get your heartrate monitor to work with your underwire bra, I have the answer. Yes, even while working out, I like to lift and separate, so I wear underwire under my sports bra for a more feminine look. However, the wire prevents my heart rate monitor from picking up the signal of my chest strap. So….. I scooted the chest strap around, and moved the sensor to my back. The signal is back to perfect. It doesn’t stay up quite as well, so you’ll have to tighten and tuck to get it to stay.
Hope that solves a dilema for you as well!