Hey Just - thanks so much on the helpful info. Sorry I forgot to mention I was not on any meds (other than 10 cups of coffee per day). I was only recently diagnosed but have always been a night owl ("Delayed Sleep Phase" syndrome) like my Dad, which I realize now is tied in with us being bipolar.

And yes, the hypo comes on especially when I'm sleep deprived, much to my benefit actually in completing tasks at work and solving complex problems. So that's the positive.