The Biological Clock

I have sleep apnea and have for several years. I use a CPAP machine at night. I found this link that shows the role of the biological clock on bipolar disorder, including sleep apnea. For one thing, one wakes up continually when they stop breathing as part of apnea and this disturbs one's sleep. Definitely lack of sleep or just a shift change at work can affect how your brain deals with bipolar. Staying up all night or just not being able to sleep can push you over the edge into an episode- usually mania (as least for me!). Disturbing your biological clock in general and disturb your mood parts of the brain, especially if you're bipolar.