Guide :Exercise & Fitness : Ironman Triathlon Heart Rate Monitor
Inaccurate/intermittent heart rate info?
I have owned my Timex heart rate monitor for about 2 years. It isn't working very well, but I'm not quite sure what the problem is. Sometimes, it accurately records heart rate, but other times, it registers much lower numbers than my actual heart rate. Could this be because the battery in the watch is low? Or is there some problem with the sensor? Thanks for any help you can provide!