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Covid actually reactivates EBV.

Different etiologies can have the same symptoms and it is silly to suggest there is no difference between diseases. They’ve found tests which can distinguish long Covid.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10292739/#:~:te....

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Covid doesn’t reactivate the Epstein-Barr virus. What it does is it weaken the immune system further by depleting ATP and GTP. That weakening of the immune system stops our immune system from suppressing EBV.

Because exercise alone can weaken the immune system enough to Reactivate viruses.

Thankfully exercise can also help strengthen the immune system. (source: I've been exercising a lot lately after years of feeling like I had chronic fatigue - more accurately it seems to have been sleep apnea - and have had 3 diagnosed cases of mono in my life)

I felt fatigued once and had a doctor tell me "sometimes you just have to exercise even if you don't feel like it and then you feel like it"

There are some conditions this doesn't apply to, but it was good advice for me.

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