Mail app showing 57 minutes of Screen Time when I was sleeping on my iPhone

Hey, I was peaking around my screen time and i noticed the Mail app was listed as been used for 57 minutes just today. This doesn’t add up because 1, I haven’t opened it for the long of a time, and 2, it happened during a time when I was asleep. I checked battery settings aswell and it says that the mail app had 1 minute on screen and 1 minute in the background, so I don’t know which to believe. If someone could explain what could possibly be causing this, and weather it’s a cause for concern would be a great help. Thanks!

[Re-Titled by Moderator]

Original Title: Screen time showing stats i’m unfamiliar with