WHOOP 5.0 Bicep Band Detecting Sleep Too Early

I recently switched from wearing my WHOOP 5.0 on my wrist to the bicep band, and overall it works great, better comfort and seemingly cleaner readings during the day.

The issue is sleep detection. Since switching to the bicep band, WHOOP regularly detects my sleep start time way too early. Some nights I get in bed 1–2 hours before I actually fall asleep, and WHOOP will sometimes count that whole period as sleep. It has been off by as much as 2 hours.

I’ve manually corrected the sleep start time for about two weeks, hoping it would recalibrate or learn from the edits, but it doesn’t seem to be improving.

Has anyone else had this issue with the bicep band? Is there any way to improve sleep detection accuracy other than manually editing every morning or switching back to wrist wear at night?

Thanks

Yes i have same issue with my bicep band.

Thats the reason im here, trying to find a solution how to fix this, i’m tired editing everyday my Sleep data.

I actually like the band and want to keep it but if the Sleep date will not be accurate i will return.