Briefing: Exercise and Napping Both Counter Memory Loss from Sleep Deprivation
Two recent studies show that a 20-minute workout or a 90-minute nap can equally protect memory after sleep loss, but through different brain mechanisms.
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Napping
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Workout or Nap: The Two Fast Ways to Preserve Memory After a Sleepless Night
A McGill University study found that after 30 hours without sleep, a 20-minute cycling workout or a 90-minute nap helped healthy young adults recall about 22% more images on memory tests three days later than those who did nothing. The two interventions improve memory via different brain pathways—napping recharges brain resources, while exercise makes use of remaining resources more efficiently—though neither should substitute for sleep. The findings are particularly relevant for shift workers, with researchers suggesting employers provide protected time for these strategies rather than relying on sleep alone.
Split sleep could shield night-shift workers from health risks
Night-shift work disrupts the body’s circadian rhythm, harming sleep quality and potentially increasing risks of dementia, heart disease and mental illness as sleep disruption affects brain waste clearance and raises stress hormones. Researchers are exploring biphasic sleep (two daily sleep blocks) and planned naps as possible ways to mitigate harm, aiming to develop clear guidelines for shift workers, though more evidence is needed.
Frequent Morning Naps May Signal Hidden Health Risks in Seniors, Study Finds
A long-term study using wearable-measured nap patterns in 1,300+ older adults (average age ~81) found that more frequent and longer morning naps are associated with higher all-cause mortality, suggesting napping patterns could help flag underlying health issues (though correlation, not causation).
Maximizing Brain Power Through Perfect Naps
Napping can boost alertness and performance when done correctly, ideally for 20-30 minutes and not after 3pm, with longer naps (60-90 minutes) being beneficial but potentially disruptive to nighttime sleep. The motivation for napping varies, and it should complement, not replace, good nighttime sleep. Using tools like eye masks and establishing routines can improve nap quality, but naps are most useful as a short-term aid rather than a daily necessity, especially if one already gets sufficient sleep.
New Study Reveals Hidden Health Risks of Daytime Napping
A study suggests that certain napping patterns, especially longer naps and those around noon, may be linked to increased mortality risk in older adults, potentially due to underlying health issues like sleep disorders. Short naps under 30 minutes may offer health benefits, and lifestyle factors such as physical activity could mitigate risks. The relationship between napping and health is complex and influenced by various factors, warranting further research.
Expert warns: Improper napping may increase health risks and mortality
A study suggests that longer and irregular daytime naps in middle-aged and older adults may be linked to higher mortality risk, potentially serving as indicators of underlying health issues, though causation is not established. Good sleep hygiene and routine assessments are recommended to improve sleep quality and overall health.
Study Links Common Sleep Habit to Increased Risk of Early Death
A large study suggests that napping longer than half an hour, especially in the early afternoon, may be linked to an increased risk of early death, possibly indicating underlying health issues or disrupting natural rhythms, though causality is not confirmed.
"Link Between Sleep Patterns and Diabetes Risk Uncovered by Researchers"
A study by Penn State's College of Health and Human Development tracked the sleep habits of nearly 3,700 participants over a decade and identified four distinct sleep categories: good sleepers, weekend catch-up sleepers, insomnia sleepers, and nappers. Insomniacs had a 28 to 81 percent higher risk of heart disease, diabetes, and depression, while nappers had a 128 percent increased risk for diabetes and a 62 percent increased risk for frailty. Environmental factors and lifestyle were found to play a significant role in sleep quality, and the study suggests that educating the public about good sleep health and promoting sleep hygiene behaviors could help reduce the risk of developing sleep-related problems.
"New Study Suggests Daily Naps May Slow Age-Related Brain Shrinkage"
A new study published in Sleep Health suggests that taking daily naps may be linked to a larger total brain volume, potentially slowing down age-related brain shrinkage. Researchers found that frequent nappers showed a difference of 2.6 to 6.5 years in brain aging compared to non-nappers. The study used Mendelian randomization to establish a causal link between napping and brain health. While the benefits of napping have been previously recognized, this study adds to the growing evidence supporting the positive impact of short daytime naps on alertness, mood, memory, and stress reduction.
The Optimal Duration for Afternoon Naps: Expert Advice for Improved Rest
Napping can have numerous benefits, including improved cognitive function, mood, and memory. To optimize your nap, experts recommend timing it about six to eight hours after waking up, keeping it short (around 20 minutes) to capture the lightest stages of sleep, finding a quiet and comfortable space, and setting an alarm. It's important to avoid napping too late in the day or for too long, as it may interfere with nighttime sleep. If napping isn't possible, taking a short break to engage in activities like walking or meditation can also help refresh the brain.
"Recharge and Refresh: 5 Brain-Resting Techniques"
In a world filled with constant stimulation, it is crucial to give our brains the rest they need to repair and restore themselves. Sleep is the most effective way to achieve this, with adults ideally needing between 7 and 9 hours per night. Consistency in sleep schedules is also important. Taking short naps of around 30 minutes can be beneficial, as can engaging in physical activity and spending time in nature. Activities requiring less brain power, such as watching TV or grocery shopping, can also provide a break for the brain. These tips from sleep expert Victoria Garfield can help promote brain rest and overall well-being.
Napping Boosts Brain Size, Longer Sleep Improves Cognitive Function
Regular daytime napping may help maintain brain health and slow down brain shrinkage with age, according to a study by UCL and the University of the Republic in Uruguay. Researchers found that individuals genetically inclined to nap had larger brain volumes, which is associated with a lower risk of dementia. The study suggests that short daytime naps could be beneficial for preserving brain health as we age.
The Surprising Link Between Coffee and Sleep Deprivation, According to a Psychologist
A psychologist from Michigan State University's Sleep and Learning Lab explains that there is no substitute for sleep when it comes to maintaining cognitive performance. Sleep deprivation impairs attention and placekeeping abilities, and while caffeine can help improve attention in sleep-deprived individuals, it does not reduce placekeeping errors. Napping during the night also does not provide any discernible benefits to cognitive performance. Ultimately, sufficient sleep is crucial for optimal brain function, and there is no replacement for it.
The Impact of Naps on Baby's Cognitive Function: What You Need to Know
A recent study conducted at the University of East Anglia suggests that an increased frequency of naps in babies may lead to a smaller vocabulary and slower cognitive function. However, researchers advise against shortening nap times and instead encourage parents to allow their children to nap naturally and for as long as they need. Monitoring a baby's sleep patterns and consulting a pediatrician if there are any concerns is recommended. It is important to establish a consistent sleep schedule to ensure optimal growth and development.