I might celebrate with a drink and record it when I finish my upcoming vEveresting.

I definitely sweat buckets even when the ambient temperature isn't very high. I can ride outside if it's hot (a rarity in the PNW) but indoors I need it to be 60 or else I'm sweating within minutes of getting on the bike.

I've experimented with doing heat acclimatization sessions - hour of low Z1/Z2 without any fans or water, but stopped when I had some health issues that interrupted my riding. Might try it again at some point.