I have also gotten into this habit, but I'm still on the fence about whether it is a net positive change…

Pros: Among various types of breaks one can take while WFH, showers feel particularly restorative. They also sometimes end up being surprisingly productive—diffuse thinking modes, shower thoughts, etc.

Cons: The "when" of showering was previously an automatic outcome, but now it is a conscious decision/obligation. I also find (as many people do) that showers give momentum to my morning, which is arguably more useful when just waking up than mid-day (although YMMV here).

I have to agree. Not just showers, but any type of personal cleansing. I've gotten in the habit of waiting until well after my wife is awake and out of bed before I shave and brush my teeth, and it's perfectly fine.

I've run the numbers, and unless the PVs are putting out above approximately 4KW, it's cheapest to take my shower before 8AM. Thankfully I live where it's sunny almost all the time and I often get 6KW between 1100 and 1300, but in the Winter and cloudy days, it's best to get that shower in early.

You can do this in the office too, assuming it has an office gym

Been there, done that. Not the same. Unless your company is fancy I guess? I just have a really cozy bathroom with everything I need =]