The last time I moved a piano by myself was 32 years ago. Did it fairly often in my 20s and 30s, though (a sometime occupational hazard 😉 ). This (below)? A wee tad more than I’d want to attempt nowadays. It’s the knees, the back and between my ears. *heh*
"In a democracy (‘rule by mob’), those who refuse to learn from history will be the majority and will dictate that everyone else suffer for their ignorance."
In my 30s I once moved an upright piano single-handed in order to decorate. I took out the action and removed the upper and lower front panels. The metal frame is what makes it heavy. Likewise, I shall not be doing it again now I am 30 years older.