I find that I cannot sleep without taking 100mg of serquel at night (I know it's a tiny dose but works on me as a sleeping pill!) If I do not take that I am more often than not awake until 3am - 4am reading. I am not necessarily running around doing housework but would like to - I don't because I don't want to wake my husband and daughter. I am Bipolar1 and am usually on the up side, and I can actually survive on very little sleep, but I know it's not healthy so I take my medication like a good girl. In my 20s before diagnosis I was constantly in that pattern and attended work/uni/parties etc and ddn't have any issues with cognitive dysfunction as far as I can remember - this seems to have hit in my 40s and has more to do with not using my brain (I think) as I am not working or studying at the moment. Perhaps there was some chemical thing (thing!!) behind the hypomanic state that allowed me to function highly on little or no sleep - or maybe i'm just getting old? Or maybe it's the meds themselves? Dunno...