Can Napping Make Up for Lost Sleep? What to Know About Health Benefits - The New York Times

Sleep Debt: The Hidden Cost of Insufficient Rest

Oversleeping: The Effects & Health Risks of Sleeping Too Much

Your Child's Brain May Determine When They Give Up Naps

Why We Sleep, Book by Matthew Walker, Official Publisher Page

The Health Toll of Poor Sleep - The New York Times

Sleeping late? Napping all the time? What your sleep says about your health

Yes, You Can Catch Up on Sleep. A Sleep Expert Explains How

How to Sleep Less: 18 Tips to Get to Sleep Faster and Feel Rested

The Science of Sleep and Productivity