Question: Cardiogram - Heart rate showing 25 BPM at deep sleep for a very few moments?
I am using apple watch series-3 and cardiogram app. For last four days I started using the watch during my sleep also. I shocked to see the bar chart for heart rate on cardiogram app. I noticed momentary drop in my heart rate at the level of 20-28 BPM for few minuted during very deep sleep. I am attaching herein screenshot for four days.
Kindly, let me know is this abnormal as per health? Or, apple watch heart sensor or cardiogram app is behaving erroneously?
Please share your views.
Apple Watch Series 3, iOS 11.3, Cardiogram App