His eyes were still closed, but he drew the deep breaths of normal sleep.

"Now we let him go from the hypnotic state into a normal sleep, right?"

After a good night's normal sleep, he ought to be fine.

The drug has faded from his system, and he now sleeps a normal sleep.

It accounts for 25% of normal sleep, coming in longer periods toward morning.

People with normal sleep and alertness take about 10-20 minutes to fall asleep.

The patient on the cot was deep in normal sleep.

Such experiments raise the question of what role the immune system plays in normal sleep.

Betty had passed from her stupor into what looked like a normal deep sleep.

When a subject's already in normal sleep, there's no awareness of going under.