Sleeping in on weekends could extend your life says study

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"In conclusion, short, but not long, weekend sleep was associated with an increased mortality".

Of the subjects, it was found that people who slept for less than eight hours during the week and weekend had a higher mortality rate.

According to new research, getting extra sleep on the weekend can undo the damage of failing to get enough during the week, ultimately helping you live longer.

One sleep expert said to be cautious about the findings, telling the Washington Post sleep can't be banked and cashed out later. We can't deposit zzzs over the weekend and expect to cash them out later. The study's authors followed 38,015 survey participants over 13 years to track their mortality rates.

On the flip side, those who slept more than eight hours a night had higher mortality rates as well.

They did account for other factors influencing sleep, such as alcohol and coffee consumption, smoking habits, shift work and more.

However, that risk is increased if a person is getting consistently sleeping less than five hours, or more than nine hours per night. The individuals were restricted to 4.67 hours of sleep for each 20-hour time period, which is the equivalent to sleeping around 5.5 hours in a 24-hour day. Monday was found to be the day of the week when people feel the least energetic.

This study relied on people to describe their own sleep habits, which can generate a "mish-mosh", in Lauderdale's view, of "accurate and less accurate information". They are the ones who can compensate with longer rest on the weekends, because there is not as much of a deficit.

Self-reporting may be considered a limitation of the study, but researchers note it's a practical way to accumulate large-scale data. That, Dr Akerstedt said, was perhaps because older individuals got the sleep they needed.

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