I have them all the time. I have sleep apnea, and something I call short sleep. With short sleep I generally get about 4-6 hours at a stretch, then I can't get back to sleep right away, so I go do other things for a while and then try again sometimes, or just stay up. From descriptions given by others, some of you suffer from short sleep, and others sound like you might have sleep apnea.
Sleep apnea is when the palate at the back of your mouth collapses during sleep and cuts off your airway. It causes many micro wakings during the night. You don't even realize you are waking up and then falling right back to sleep for most of them, but can be aware of some of the mini wakings. The shortage of oxygen caused by this condition causes exhaustion, fallling asleep during the daytime at inappropriate times. It can also cause nightmares, overheating, headaches, dizzyness, heart attacks, and strokes. If you are having sleep problems with two or more of these symptoms, you should have yourself checked out for sleep apnea, as it can be fatal if untreated. Your doc can have you scheduled for a sleep study at a sleep clinic. I've had two done, myself. It wasn't a problem. They did find I have sleep apnea, and now I have a CPAP machine to use for it.
Unfortunately, I still have a problem with short sleep.

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