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Sleeping in on weekends: maybe not as bad as previously thought
People who compensated for sleep deprivation with catch-up sleep did not have an increased risk of mortality. People who consistently slept too little without ever making it up did
Jorge Marten Groen
May 122 min read


She sleeps four hours a night with the help of a pill. She’s 95
Chronic insomniacs are treated harshly in the media. We’re told that six hours of sleep damages the brain, weakens the immune system, and causes the heart to fail. That the risk of depression increases. And yet, some people still make it to 95 just fine
Jorge Marten Groen
May 73 min read


Chronic insomnia makes your brain four years older
A forty percent higher risk of dementia. Brains that function as if they are four years older. These are the figures from a study involving more than 2,700 adults with chronic insomnia
Jorge Marten Groen
Apr 302 min read
If you’re last on your own list, you often end up paying the price at night
When you’re under pressure your body enters a state of alertness. The stress hormone cortisol keeps you vigilant. That’s useful in urgent situations, but the brain doesn’t distinguish between a caregiving task tomorrow morning and a lion around the corner. Under stress, the body remains in a heightened state of readiness, which prevents proper recovery during sleep. As a result, you either don’t get enough sleep or the quality of your sleep declines.
Jorge Marten Groen
Apr 283 min read


Bad sleep can be in your DNA, but you can often do something about it
If you think you sleep poorly because your father or mother did too, and that it’s simply “in your DNA,” some nuance is needed. Predisposition explains why you may be more vulnerable. It doesn’t necessarily explain why you’re sleeping poorly now or why it just isn’t improving.
Jorge Marten Groen
Apr 212 min read


What others post on social media about sleep (and whether it’s accurate)
During a scroll through social media, I notice how persistent certain sleep myths still are. I’ve listed four common ones.
Jorge Marten Groen
Apr 133 min read


What sleep trackers can and cannot measure
A study by researchers from the University of Salzburg compares eight popular sleep trackers with polysomnography, the medical gold standard for sleep research. The findings are surprising.
Jorge Marten Groen
Apr 92 min read


Music can help you sleep better – give this playlist a try
Various scientific studies confirm that listening to music before going to sleep can improve sleep. This is especially true for people with mild to moderate sleep problems.
Jorge Marten Groen
Apr 12 min read


The thin line between optimizing sleep and overthinking sleep
The next time your “smart” watch tells you that you only got 45 minutes of deep sleep or your sleep score has dropped below 70, take a moment to breathe calmly
Jorge Marten Groen
Mar 172 min read


What 47 million nights of sleep data reveal about your health
The analysis of a massive sleep dataset mainly shows that sleep is not a mysterious process over which you have little control. On the contrary, small and consistent behavioral changes can already make a big difference.
Jorge Marten Groen
Mar 133 min read


The silent epidemic: sleep deprivation in young people
According to the American Academy of Sleep Medicine and the American Academy of Pediatrics, young people between the ages of thirteen and eighteen need eight to ten hours of sleep per night for optimal health and development. Yet the majority do not meet this standard
Jorge Marten Groen
Mar 93 min read


The most powerful sleep intervention is too boring for words
We tend to think that fatigue is about the number of hours we sleep. Eight hours is good. Seven is borderline. Six is a problem. But what many people don’t realize is that you can sleep a perfect eight hours and still feel exhausted. Not because you lack sleep, but because you lack regularity.
Jorge Marten Groen
Mar 33 min read


Going to the doctor with sleep problems: a logical start but not always the end
Doctors prescribe sleeping pills to one in two people who suffer from insomnia. Sleeping pills do have an effect. They calm you down. They make you drowsy. Sometimes you suddenly sleep through a few hours again. That can feel like a relief. You might sleep better, but the confidence that you can do this on your own gradually fades into the background.
Jorge Marten Groen
Feb 183 min read


Yoga: apparently good for sleep
Yoga combines movement, breathing, focus, and relaxation. This appears to reduce stress and positively influence your nervous system. Interestingly, it's not about the gentle, slow yoga, but rather more intensive forms like power yoga or vinyasa flow
Jorge Marten Groen
Aug 26, 20252 min read


Struggling with sleep? Let’s measure it
In my sleep coaching programs, I don’t treat questionnaires as just a 'test'. I use them as a starting point for meaningful change
Jorge Marten Groen
Aug 25, 20252 min read


Give yourself a sleep routine, your awake brain will thank you
A sleep routine helps signal to your brain and body that it’s time to wind down. By repeating the same calming habits each day, you reduce stress, fall asleep more easily, and improve the quality of your sleep.
Jorge Marten Groen
Aug 11, 20252 min read


A bad night doesn’t have to make a bad day
Do you remember pulling an all-nighter in the past? Did you have a bad day the next day?
Jorge Marten Groen
Aug 7, 20251 min read
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