“Sleeping extra hours on weekends can fully compensate for sleep deprivation accumulated during the week.”

Evidence suggests that while occasional WCS may be beneficial, it cannot fully offset the adverse effects of chronic sleep deprivation. Conclusions: WCS may offer transient relief but should not be considered a sustainable strategy for sleep debt repayment. Promoting consistent sleep schedules through public health interventions and education is essential.

Recent studies demonstrate that one weekend of recovery sleep may not be sufficient in all persons to fully reverse all neurobehavioral impairments observed with chronic sleep loss, particularly vigilance. It is now clear that recovery of vigilance following short sleep requires longer than one weekend.

Napping and weekend catchup sleep do not fully compensate for high rates of sleep debt and short sleep at a population level (in a representative nationwide sample of 12,637 adults).

Extended recovery sleep over the weekend reverses the impact of one work week of mild sleep restriction on daytime sleepiness, fatigue, and IL-6 levels, reduces cortisol levels, but does not correct performance deficits.

New research presented at ESC Congress 2024 shows that people that 'catch up' on their sleep by sleeping in at weekends may see their risk of heart disease fall by one-fifth. “Sufficient compensatory sleep is linked to a lower risk of heart disease,” said study co-author Mr Yanjun Song.

Long sleeping on the weekend can lessen tiredness for a short time, but it won't cure a chronic sleep deficit. Sleeping less affects the body's hormones, metabolism, and the brain's functions over time; these don't revert back to normal with just one or two nights of long sleep.

Failing to stick to a regular time for going to bed and waking up increases the risk of stroke, heart attack and heart failure by 26%, even for those who get a full night's sleep, the most comprehensive study of its kind suggests. Even getting eight hours of sleep was insufficient to offset the harmful effects of consistently varying bed and wake-up times, experts said.

Regular disruptions to your circadian rhythm can increase your risk for heart disease, obesity, type 2 diabetes, and high blood pressure, according to a new scientific statement from the American Heart Association (AHA). Dr. Freeman emphasizes the vital role of sleep and sleep quality to his patients, along with exercising regularly and eating a healthy, mostly plant-based diet, which also impacts sleep.

But recent studies show that weekend catch-up sleep doesn't fully undo sleep deprivation during the week (2). Even worse, irregular sleep schedules (a phenomenon known as “social jet lag”) can disrupt your body's circadian rhythms and lead to cardiometabolic diseases (heart disease, type II diabetes, and more) (5).

“The results imply that short (weekday) sleep is not a risk factor for mortality if it is combined with a medium or long weekend sleep,” they wrote. “This suggests that short weekday sleep may be compensated for during the weekend, and that this has implications for mortality.”

“You can be fooled into thinking that you've made up your sleep debt,” says Wyatt, “but the longer you're awake, the more you pay the price.” He explains that you may feel this recovery for four to six hours after waking from extended sleep, but after that, the lost sleep will catch up with you.

Research published in Current Biology shows that sleeping on the weekends to make up for lost sleep during the week has no beneficial effect for adults. “The key take-home message from this study is that … weekend recovery or catch-up sleep does not appear to be an effective countermeasure strategy to reverse sleep-loss-induced disruptions of metabolism,” said Kenneth Wright, Jr., PhD, University of Colorado.

For a long time, sleep experts believed it was impossible to “catch up” on lost sleep — that once it was gone, it was gone. But new research suggests that you actually can make up at least some of your sleep debt by getting more shut eye on weekends. ... A 2018, a long-term study found that folks who slept four, five or six hours a night during the week, then caught up on weekends, lived longer than those who remained sleep-deprived all week long.

Furthermore, the one-for-one sleep debt repayment argument also fails to recognize research evidence that shows a sleep deprived person sleeps more deeply during recovery sleep, and hence sleep debt can be paid back more quickly than at a one-to-one pace.