The Weekend Catch-Up: What 9,570 Adults Told the CDC About Sleeping In
Updated: 1 day ago
Everyone has a theory about weekend sleep. Some people swear by sleeping in to pay off the week. Others say it only makes Monday worse. We wanted to know what the country actually does, so we went to the largest public survey that asks.
The data
The CDC's National Health and Nutrition Examination Survey (NHANES) interviews a sample of the US population every cycle, and its sleep questionnaire asks two simple questions: what time do you usually fall asleep and wake up on weekdays, and the same for weekends. From those, the CDC derives usual hours of sleep for each kind of day.
We downloaded the 2017 to March 2020 sleep file (P_SLQ) and the matching demographics file, kept adults 18 and over who answered both questions, and compared each person's weekend hours to their weekday hours. That gave 9,570 people. The numbers below are simple counts of those respondents, without the survey's population weights, so they describe the sample rather than the country to the decimal. The shape of the result is what matters.
How much longer people sleep on weekends
The average adult in the sample sleeps 7.6 hours on a weekday and 8.3 hours on a weekend day, a difference of 41 minutes. That average hides two very different groups:
54.5% sleep the same amount or less on weekends. For more than half of adults, there is no catch-up at all.
38.9% sleep at least an hour longer on weekends.
21.3% sleep at least two hours longer. One adult in five is running a two-hour sleep debt during the week and repaying it on Saturday and Sunday.
Short sleep is far more common on weekdays. In the sample, 24.9% of adults sleep under seven hours on a weekday, against 15.1% on a weekend day. One in ten (10.4%) sleeps under six hours on weekdays.
Who catches up
The weekend gap shrinks steadily with age:
Ages 18 to 29: 7.9 hours on weekdays, 8.8 on weekends. A gap of 53 minutes, and 29.7% have a gap of two hours or more.
Ages 30 to 39: 7.5 and 8.4 hours. A gap of 58 minutes, the largest of any group, with 27.4% at two hours or more.
Ages 40 to 49: 7.3 and 8.2 hours. A gap of 54 minutes, 26.4% at two hours or more.
Ages 50 to 64: 7.4 and 8.1 hours. A gap of 41 minutes, 21.6% at two hours or more.
Ages 65 and over: 7.9 and 8.1 hours. A gap of 13 minutes, and only 8.0% catch up by two hours or more.
Thirty-somethings sleep the least during the week and swing the most on weekends. Retirees barely change their pattern at all, which is what you would expect when the alarm clock stops setting the schedule.
The people who need it most
Here is the part that surprised us. We looked at the 999 adults who sleep under six hours on weekdays, the group with the biggest debt to repay. Their weekend sleep averages 6.6 hours. They do gain two hours on average, and 47.3% of them gain two hours or more, but even after the catch-up they are still short of the seven hours the CDC recommends for adults.
In other words, the weekend does not fix a short week. It takes a six-hour sleeper to about six and a half, two days out of seven. The other five nights are unchanged.
What this means for you
A big weekend gap is a signal, not a solution. If you are sleeping two hours longer on Saturday, your body is telling you that the weekday number is too low, and the research on irregular schedules suggests the swing itself has a cost, since a late Sunday morning makes Monday night's bedtime harder to hit.
The useful question is not "should I sleep in" but "what is my weekday number, and what is pulling it down." That is a question you can only answer with your own data: a couple of weeks of mornings where you note roughly how long you slept and how it felt, then a look at which nights were short and what happened the evening before.
Try it by text
Text Hi to (831) 999-2553 to start Sleep Textapp. Each morning it sends one question, you answer with a number from 1 to 10 and roughly how many hours, and after two weeks you can ask for your patterns: your average on weekdays against weekends, your average hours, and what your rough nights tend to mention. There is no app to install and no wearable to charge.
Your first 20 messages are free. After that, one $9.99 a month subscription covers every Textapp. Text STOP at any time to end it.
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