Bipolar Insomnia is quite interesting. When a person suffers from insomnia in hypo/mania, he can get good sleep in depression. It’s strange to experience loss of sleep when you’re too excited and happy. Otherwise most of people have calm and relaxing sleep under the shadow of satisfaction. In addition to this, a person who is stressed and worried is unlikely to sleep peacefully but depression for bipolar sometime appear as blessing when it makes the depressed stick to his bed.
It’s true that Sometime insomnia occurs in severe depression as well. In that case, depression would not be a desired option to fall asleep. Luckily my depression gives me a good night sleep for 10 or more hours but the roller coaster mood swings and frequent depression cycles make me less fortunate to enjoy the full privilege of Bipolar insomnia.