How does the resting heart rate calculation in Garmin Connect work? I have a 645 Music that I wear all night while sleeping. I noticed that I get some weird values after refreshing Garmin Connect during the day. For example: this morning I woke up and after connecting to Garmin Connect my resting heart rate was 40. Then just now (after 7+ hours of being awake and moving around) I reconnected to Garmin Connect and my resting heart rate is 32. What caused the RHR to drop drastically after being awake for a while?