The Recovery page provides a summary of a day’s Recovery, calculated automatically during the last 5 minutes of Slow Wave Sleep. This page also gives you the Recovery statistics (Heart Rate Variability, Resting Heart Rate, Sleep, and Recent Strain) for that day, relative to the average of the last 30 days.
To access the Recovery page, simply swipe left twice from the One Day Overview. Once there you can tap the box below the recovery circle to access Heart Rate Variability, Resting Heart Rate, and Amount of Sleep. You can also access previous days through the Calendar view.