Apple watch recovery heart rate goes null after 1 minute

[GlassyJuice]

After excercizing my apple watch will proceed to record my heart rate for about 1 minute, then it goes null and seems to stop recording. By the time it reaches 2 minutes theres no data to display. This has been happening for a few days now

 

[Ericdjensen]

Swipe left on the heart rate recovery chart

Sorry, didn't see recovery in the title.

 

[FenC]

How long does it take for HR measurements to start again? I don’t have the issue, but Heart Analyzer does something similar on my Watch after a bigger workout - and it can take a couple of days for it to settle down again.