Can Napping Make Up for Lost Sleep? What to Know About Health

Sleep Debt: Can You Make Up for Lost Sleep?

10 Ways Sleep Deprivation Affects Your Health

a nap - その他

Struggling With A Good Night's Sleep: A Step-By-Step Guide To

Pros and cons of day-time naps

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

Sleep Deprived? Try These Strategies To Catch Up : Shots - Health

Short naps don't make up for lost sleep, study finds

Why power naps might be good for our health