She speculates that there may even be an evolutionary advantage to interrupted sleep.

Before she had a chance to panic, or even to shake herself out of the confusion of interrupted sleep, Need spoke in her mind.

Or, it may be a test to see how monotonous tasks or interrupted sleep affect people.

Then they all retired, and went back to their interrupted sleep.

Her interrupted sleep was going to make the day that much harder to get through.

Jason had to ask; the voice on the line was oddly quiet, but not the quiet of interrupted sleep.

Studies show a link between interrupted sleep and an increased risk of dementia.

Hot flashes are rarely the cause of interrupted sleep.

Her father's wiry gray bair seemed all on end at this moment of his interrupted sleep.

The subsequent pain has also been causing interrupted sleep.