I am an ultradian cycler. (Thry googling ultradian cycler instead of ultra-rapid, which is more like a slang term.) I also am mixed a lot. I'm at a point I can't tell where I am more than half the time. Up and down together or cycling? I often can't tell exactly where. But, I know when I'm more up vs. more down. I will say "more manic" or "more depressed." Because, I'm usually both but one often out-weighs the other. But those cycle, too, and my cycles last about 3-5 days for each.

I have "stable" days, but those are few and far between. Usually it will be one day only.

As an example... last week I hit a ban day where I cycled all day, due to some triggers. That was Tuesday the 9th, so that put me more manic. Okay, so all last week and over the weekend I was more manic until Wednesday. Well, that one was great and it was helping me get through this huge project at work until the stress knocked it out. It's pulled what I call the cloud on my head. My thoughts are racing but I'm really feeling low and completely overwhelmed. But now the weekend is coming and that usually helps relieve my stress so possibly by MOnday I'll be out of it again.