I've just had a very rare, for me, viral thing.
Initially I lost my voice, they streaming nose and eyes for c24hours, the cackling cough and various achy joints. The achy joints I get if I have a viral thing; in old "war wounds". OK, old sporting injuries!
The cough is now 10 days in, but going, fast. It sounds 100% worse than it is.
I did have a couple of days of feeling very tired and a bit grumpy, because I don't do "off colour" too well. My bloods were also up about 1.0 through the early days, which is unusual for me.
I hope you don't have what I did, but if you do, I gather there was "a lot of it around". Deep joy.