We know from research that sleep improves mood, pain, and in general how people feel during the day.

My sleep has improved too, although I still dread going to bed because of the insomnia I've developed.

But when the hormone, melatonin, is given in pill form two hours before bedtime, sleep improves dramatically.

"I can say their sleep improves enormously," he said.

"There is a strong movement in the research community to research how sleep improves memory and learning," Scammell says.

Did you know a good night's sleep can improve your test scores without you doing any extra work?

Lunzie proved correct, and the sound night's sleep improved Varian's out look.

That is, more sleep might improve students' performance.

As the patient learns to cope with the stresses of illness, hospitalization, and treatment, sleep may improve.

The medication has given me ambition and energy again and my sleep has improved very much so.