I will always have a soft spot for 10 things I hate about you.

Given her age, hormones could be part of the picture. My most debilitating menopause symptom was insomnia. I'm hypothesising, but could it be possible that covid accelerated perimenopause onset?

Maybe send them the review in Nature where the professor says she'll be using it to show her students what not to do in her statistic class (if I remember correctly)

I'm wondering how much this effect is who can avoid covid. They didn't test before and after, they compared people who had avoided it to people who hadn't.