Heart rate monitors can be useful for weight loss. Cardio work depends on getting your heart rate in the right zone. When you have heart rate monitors helping you, it will allow you to know what your heart rate will be while you work out. https://www.metrotimes.com/detroit/biofit-probiotic-reviews-is-biofit-weight-loss-supplement-really-effective-any-side-effects/Content?oid=266445033more