I hadn't thought of that aspect but I strongly suspect this is the cause. If a change happens gradually you're not going to notice it until there's some glarin

I hadn't thought of that aspect but I strongly suspect this is the cause. If a change happens gradually you're not going to notice it until there's some glaring indication of it. And you often won't notice that things haven't returned to baseline when you know there was a deviation. (Observation: Long Covid is more common amongst athletes. Really? Or are they actually measuring a baseline and seeing they aren't what they used to be?)