I agree with others that medications may be part of it. I assume you take the Klonopin and Zyprexa at night? I only assume that because of your ability to sleep.

bluebicycle makes a good point about the amount of sleep perhaps being relative. I think that if a person is a solid 9 hours per night, when stable, that a 6 or even 7 hour sleep when hypomanic seems reasonable, especially if taking sedating evening medications.

I take 600 mg Seroquel XR all at night, as well as a little dose of Klonopin. Even my Tegretol XR may be slightly sedating at night. I take half of my Tegretol XR in the evening. I frequently have what I call "blips" of mood elevation, where I'll be racy to an extreme during the day, but do finally calm after my evening meds. And get some sleep. Then as my evening sedation sort of heads down the other end of the bell curve of sedation, in the morning, my mood elevates again. Sometimes it will be like that for several days. In those cases, I am clearly in a hypomanic or even sometimes full manic, episode.

When my mood elevation becomes more severe, my husband usually clues me in. That's when I rely on my prn Seroquel. Sometimes a small dose of 50 mg in the morning will calm my beast. Sometimes I end up having to take up to 100 mg or 150 mg regular prn Seroquel. In this latter case, if the high prn usage continues for a few days or my mood is excessively high, I usually end up calling or visiting my psychiatrist. He will then increase my base Seroquel XR dose. This whole arrangement has been quite helpful for me over the last five years. Very often, only a small dosage adjustment is required, if I catch the mood elevation early enough.

When the time eventually comes that I start sleeping 10 hours or more per night, that's usually a clue that my base Seroquel XR dose needs to be decreased a little. That usually always helps, too.