... almost every night and this is reason why Body Battery and Stress levels are too low!
No use to measure sleeping time at all.
My previous model FR 235 did it always correct. And now I have second FR 245, due the first was with many problems including with the battery's, and Garmin changed it to new one.
The only problem which continues is the sleeping time shown wrong. I have tried to change my sleeping time limits, but zero results. With my first FR245 I asked for help to get correct sleeping times, but got not good advice.