‘Good stress’ when I am at work, I ‘need’ to be ok, stresses give me the get up & go. On off time your body knows it’s a ‘want’ rather than a ‘need’. My interpretation is that I only have ‘so much’ energy. If you need it all to manage your four days of work, your body may be being careful on your days off.
pre ms diagnoses ( I would never try it now). If I was planning a night out, I would be tired all day at work. Then once home & showered loads of energy. I always thought it was a unconscious ‘save energy’.
P.s. This is just personal interpolation, no medical science to back up.
so, your Q was… Any useful suggestions. The only one I have is, what is most important to you ? Your job or the other stuff. If it’s your job, except that the other stuff is not important & will get done as and when. If being able to do the other stuff is important to you, you may need to cut back no. Of days you work.
ms is a bitch, there are no magic answers, sorry. Big hugs