Yep. Often linked to how much sleep I’ve had. Also I find if I have loads to do it kind of breeds energy. Not doing much is a killer.
No, it’s to do with being a gardener this time of year, in this weather, and earning no money,if I’m honest...
I know what you are going through. I had it too!! I was properly ill for ten months, then had several years of slow improvement, but I never fully recovered. I’m prone to bouts of it now if I push myself a bit too hard either with training or work. I’ve learned to read the warning signs my body gives me and I now except it and ease up a bit.