For me it's hard to tell because I've only been aware of BP and having it for a short time. So it's hard for me to look back and identify what periods would be considered hypo-manic.

When I think about it, I believe that my hypo-manic episodes just seemed normal to me. But what JonB described as a mixed-state is pretty much exactly how I felt a couple months ago and it's what prompted me to go see the doc.