I used to be anxious about my school keeping those pesky permanent records which talk about all the shit I did. I later learned that's not what schools mean by permanent records.

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Yes, even as someone without anxiety this happens. This is especially true if I haven’t gotten enough sleep the last couple/few days. Also, it comes with a hangover besides the physical ailments. Lastly, if I’ve been stressed for a long while about certain things and those eventually get resolved, I’ll still feel anxiety/stress for awhile, it’s what I consider burnout as it applies to me.