I used to have cycles that would look like high peaked mountains and low peaked valleys. Sometimes, I would cycle within a cycle. In other words if I were depressed I would go between severe and mild sometimes within a day. Same with hypomania/mania.

Now, I think I cycle faster, but my meds cap it before it gets out of hand. I will have cycles that are more like gentle waves that last a day or two. Possibly, this is regular mood fluctuations that stable people have, but I don't know, I have never experienced it.