{"id":14055,"date":"2026-09-10T10:00:00","date_gmt":"2026-09-10T08:00:00","guid":{"rendered":"https:\/\/wiserootz.nl\/?p=14055"},"modified":"2026-09-02T12:34:39","modified_gmt":"2026-09-02T10:34:39","slug":"sleep-better","status":"publish","type":"post","link":"https:\/\/wiserootz.nl\/en\/beter-slapen\/","title":{"rendered":"Sleep Better: The Science Behind a Good Night\u2019s Sleep"},"content":{"rendered":"

Sleep may seem like the most passive part of your day. You turn off the light, close your eyes, and hours later a new morning begins.<\/p>\n\n\n\n

But whilst you\u2019re asleep, your body is anything but switched off.<\/p>\n\n\n\n

Your brain goes through various stages of sleep; your biological clock regulates the rhythm of day and night; and processes relating to memory, metabolism, immune function and recovery are closely linked to sleep.<\/p>\n\n\n\n

A good night\u2019s sleep is therefore about more than simply spending eight hours in bed.<\/p>\n\n\n\n

How well you sleep is determined by a combination of sleep duration, quality, timing and regularity.<\/strong><\/p>\n\n\n\n

And that is precisely why sleeping better starts with understanding how sleep actually works.<\/p>\n\n\n\n

Why do we need sleep?<\/h2>\n\n\n\n

We spend about a third of our lives sleeping. That alone shows just how essential sleep is for our bodies.<\/p>\n\n\n\n

During the night, your brain activity, heart rate, breathing and body temperature, amongst other things, change. Hormones and processes involved in learning, memory, metabolism and immune function also follow their own night-time patterns.<\/p>\n\n\n\n

This makes sleep one of the key elements that recur when we look at healthy ageing and healthspan<\/strong>.<\/a><\/p>\n\n\n\n

Sleep is therefore not a period during which the body simply does nothing.<\/p>\n\n\n\n

It is a other biological condition<\/strong>, each with its own rhythm and function.<\/p>\n\n\n\n

And that situation changes during the night.<\/p>\n\n\n\n

This is how a night goes<\/h2>\n\n\n\n

A night consists of several sleep cycles in which NREM sleep<\/strong> and REM sleep<\/strong> take turns.<\/p>\n\n\n\n

NREM is divided into three stages:<\/p>\n\n\n\n

N1 \u2014 light sleep<\/strong>
The transition from being awake to falling asleep. Your muscles relax and your brain activity changes.<\/p>\n\n\n\n

N2 \u2014 more restful sleep<\/strong>
You are less responsive to your surroundings. Characteristic patterns of activity appear in the brain, which are being studied in relation to, amongst other things, memory and information processing.<\/p>\n\n\n\n

N3 \u2014 deep sleep<\/strong>
Also known as slow-wave sleep<\/em>. Brain activity is characterised by slow waves and you are in a state of deep sleep.<\/p>\n\n\n\n

After that, you can REM sleep<\/strong> follow: rapid eye movement sleep<\/em>. Brain activity increases again and vivid dreams are relatively common during this phase.<\/p>\n\n\n\n

During a normal night, we cycle through these stages several times. At the start of the night, we experience a relatively higher proportion of deep NREM sleep, whilst periods of REM sleep generally become longer as the night progresses.<\/p>\n\n\n\n

A good night\u2019s sleep is therefore not a uniform state lasting eight hours.<\/p>\n\n\n\n

It is a carefully organised cycle of different sleep stages.<\/strong><\/p>\n\n\n\n

\"Slaapcyclus<\/figure>\n\n\n\n

Is more deep sleep always better?<\/h3>\n\n\n\n

Wearables have made our sleep stages visible. Every morning, we can see how much deep sleep and REM sleep our watch thinks it has recorded.<\/p>\n\n\n\n

That might be interesting, but it could also give the impression that we need to optimise our sleep stages.<\/p>\n\n\n\n

Biologically speaking, it\u2019s not quite that simple.<\/p>\n\n\n\n

Each sleep stage has its own characteristics and functions. Furthermore, the proportions change over the course of a person\u2019s life and vary from night to night.<\/p>\n\n\n\n

What\u2019s more, consumer wearables track sleep stages treasures<\/strong> based on factors such as movement and heart rate, for example. That is not the same as measuring brain activity in a sleep laboratory.<\/p>\n\n\n\n

It is therefore better to look at patterns over a longer period rather than at a single \u2018perfect\u2019 sleep score.<\/p>\n\n\n\n

What does sleep do for your brain?<\/h2>\n\n\n\n

During sleep, the way in which different areas of the brain are active and communicate with one another changes.<\/p>\n\n\n\n

An important area of research is memory consolidation<\/strong>. Information that we take in during the day can be reactivated and consolidated whilst we sleep. Different stages of sleep appear to play different roles in this process.<\/p>\n\n\n\n

Emotional processing is also being studied in relation to sleep.<\/p>\n\n\n\n

In addition, there is growing interest in the glymphatic system<\/strong>: a system involved in the transport of fluids and the elimination of certain substances in the central nervous system.<\/p>\n\n\n\n

Experimental research shows that these processes are linked to sleep and wakefulness.<\/p>\n\n\n\n

That is why you sometimes hear that your brain is \u2018cleaned\u2019 whilst you sleep. It is an appealing metaphor, but scientifically too simplistic. Moreover, much of the mechanistic understanding comes from animal research.<\/p>\n\n\n\n

What the research makes particularly clear is:<\/p>\n\n\n\n

Even when you\u2019re asleep, your brain remains biologically active.<\/strong><\/p>\n\n\n\n

Your biological clock determines when you want to sleep<\/h2>\n\n\n\n

Why is it that at some times you can hardly be kept awake, whilst at other times you find it difficult to fall asleep?<\/p>\n\n\n\n

Broadly speaking, there are two systems at work here.<\/p>\n\n\n\n

The first thing is sleepiness<\/strong>. The longer you stay awake, the greater your need for sleep usually becomes. The neurotransmitter adenosine, amongst other factors, plays a role in this.<\/p>\n\n\n\n

In addition, we have circadian rhythm<\/strong>: the body\u2019s internal biological clock, which operates on a cycle of approximately 24 hours.<\/p>\n\n\n\n

A central biological clock in the brain helps to synchronise all sorts of processes with the rhythm of day and night. Light is one of the most important signals for this.<\/p>\n\n\n\n

Also melatonin<\/strong> plays a role in this. As it gets darker in the evening, natural melatonin production normally increases.<\/p>\n\n\n\n

Melatonin is often referred to as the sleep hormone<\/em> \u2026 is referred to as, but it actually functions more like a time signal<\/strong> for the body.<\/p>\n\n\n\n

That explains why sleep doesn\u2019t just depend on how tired you are.<\/p>\n\n\n\n

Timing matters.<\/strong><\/p>\n\n\n\n

\"Ochtendlicht<\/figure>\n\n\n\n

Better sleep starts during the day<\/h2>\n\n\n\n

When we\u2019re having trouble sleeping, we often focus on the hour before bed.<\/p>\n\n\n\n

But your next night actually begins as soon as you wake up in the morning.<\/p>\n\n\n\n

Daylight<\/strong> helps your body clock synchronise with your surroundings.<\/p>\n\n\n\n

Exercise<\/strong> is also relevant. Research shows that regular physical activity can support various aspects of sleep quality.<\/p>\n\n\n\n

And also regularity<\/strong> deserves attention.<\/p>\n\n\n\n

Getting up and going to bed at roughly the same time every day helps to keep your sleep-wake cycle predictable. Research into sleep regularity suggests that it is not only the amount of sleep, but also its regularity, that is important for health and well-being.<\/p>\n\n\n\n

That makes sleep much more than just a night-time activity.<\/p>\n\n\n\n

Your morning, afternoon and evening all work together to set the stage for your next night.<\/strong><\/p>\n\n\n\n

What can disrupt your sleep without you realising it?<\/h2>\n\n\n\n

Some habits affect our sleep, even though we don\u2019t always realise it straight away.<\/p>\n\n\n\n

Caffeine<\/h3>\n\n\n\n

Caffeine temporarily blocks adenosine receptors and can therefore reduce feelings of drowsiness.<\/p>\n\n\n\n

What\u2019s more, the effect may last longer than the stimulating sensation you experience yourself.<\/p>\n\n\n\n

A systematic review and meta-analysis found that, on average, caffeine was associated with a reduction in total sleep time, lower sleep efficiency and less deep sleep. The extent to which individuals are affected by this varies considerably.<\/p>\n\n\n\n

Anyone who has trouble sleeping should therefore not just look at how much<\/strong> the amount of caffeine he or she consumes, but above all to when<\/strong>.<\/p>\n\n\n\n

Alcohol<\/h3>\n\n\n\n

Alcohol can make you feel sleepy more quickly.<\/p>\n\n\n\n

But falling asleep and sleeping well are not the same thing.<\/p>\n\n\n\n

Alcohol affects normal sleep architecture and can contribute to less stable sleep later in the night.<\/p>\n\n\n\n

A nightcap can therefore make you feel drowsy without necessarily leading to a better night\u2019s sleep.<\/p>\n\n\n\n

Stress<\/h3>\n\n\n\n

And then there\u2019s that familiar situation: you\u2019ve been tired all day, but the moment your head hits the pillow, your brain suddenly starts thinking about everything.<\/p>\n\n\n\n

Stress, alertness and worrying<\/a> can make it harder to drift off to sleep peacefully.<\/p>\n\n\n\n

This can then be compounded by sleep-related stress:<\/p>\n\n\n\n

I need to go to sleep now.<\/em>
Only six hours to go.<\/em>
I\u2019ll be exhausted tomorrow.<\/em><\/p>\n\n\n\n

It is precisely this quest for perfect sleep that can therefore cause additional restlessness.<\/p>\n\n\n\n

Not every night has to be perfect.<\/p>\n\n\n\n

What helps you sleep better?<\/h2>\n\n\n\n

When we apply science to everyday life, the basic principles are surprisingly simple.<\/p>\n\n\n\n

Try to get some daylight in the morning.<\/strong>
Light provides your body clock with important information about the time of day.<\/p>\n\n\n\n

Make sure you exercise regularly.<\/strong>
Regular exercise can also help improve the quality of sleep.<\/p>\n\n\n\n

Try to maintain some sort of routine in your days.<\/strong>
Try not to let your sleeping and waking times vary too much from day to day.<\/p>\n\n\n\n

Take a look at your caffeine moment.<\/strong>
If you\u2019re sensitive to caffeine, having your last cup a bit earlier can make all the difference.<\/p>\n\n\n\n

Make the transition to night-time a little more peaceful.<\/strong>
Less bright light, work and mental stimulation can create a clearer distinction between day and night.<\/p>\n\n\n\n

Make your bedroom a place conducive to sleep.<\/strong>
A dark, quiet and comfortable environment helps ensure a peaceful night\u2019s sleep.<\/p>\n\n\n\n

And perhaps most importantly:<\/p>\n\n\n\n

Look for patterns, not perfection.<\/strong><\/p>\n\n\n\n

A single bad night\u2019s sleep says little about your sleep as a whole.<\/p>\n\n\n\n

Make sleeping a ritual again<\/h2>\n\n\n\n

At Wise Rootz, we love rituals.<\/p>\n\n\n\n

Not because a ritual magically lulls your body to sleep, but because repetition can help to create a moment of transition.<\/p>\n\n\n\n

A hot shower. Dimming the lights. Reading a few pages. Some soothing music. Putting your phone away. A cup of decaffeinated tea.<\/p>\n\n\n\n

The specific ritual doesn\u2019t have to be perfect.<\/p>\n\n\n\n

The value also lies in the moment you use it to highlight something:<\/p>\n\n\n\n

The busy day is over.<\/strong><\/p>\n\n\n\n

Self-care doesn\u2019t have to become yet another list of things you\u2019re expected to do properly. On the contrary, it can be a way of consciously making space for rest and recovery.<\/p>\n\n\n\n

For those who like to incorporate botanicals into such an evening, we have developed\u00a0Sleep Deep as part of a mindful evening routine<\/strong>.<\/a><\/p>\n\n\n\n

\"Rustig<\/figure>\n\n\n\n

A good night\u2019s sleep is more than eight hours<\/h2>\n\n\n\n

There is no such thing as a perfect night that we have to recreate every single day.<\/p>\n\n\n\n

Sleep changes with age, life stage, stress, health and environment. Also during biological ageing<\/strong> <\/a>alter various processes involved in sleep and recovery. <\/p>\n\n\n\n

That is why you cannot reduce sleep quality to a single figure.<\/p>\n\n\n\n

Een completer beeld kijkt naar:<\/p>\n\n\n\n

Duration<\/strong> \u2014 krijg je voldoende gelegenheid om te slapen?<\/p>\n\n\n\n

Continu\u00efteit<\/strong> \u2014 wordt je slaap vaak onderbroken?<\/p>\n\n\n\n

Timing<\/strong> \u2014 past je slaap redelijk bij je biologische ritme?<\/p>\n\n\n\n

Regelmaat<\/strong> \u2014 verschillen je slaap- en waaktijden sterk van dag tot dag?<\/p>\n\n\n\n

Functioneren<\/strong> \u2014 voel je je overdag meestal voldoende uitgerust en alert?<\/p>\n\n\n\n

Dat laatste wordt gemakkelijk vergeten.<\/p>\n\n\n\n

We slapen uiteindelijk niet om een perfecte grafiek te produceren. We slapen om wakker te kunnen leven.<\/strong><\/p>\n\n\n\n

Je volgende nacht begint vandaag<\/h2>\n\n\n\n

Beter slapen vraagt niet om de duurste wearable, een perfect avondritueel of een kast vol slaapproducten.<\/p>\n\n\n\n

De basis is veel eenvoudiger.<\/p>\n\n\n\n

Licht wanneer de dag begint. Beweging. Genoeg gelegenheid om te slapen. Bewust omgaan met cafe\u00efne en alcohol. Ruimte om af te schakelen. En een ritme dat je lichaam enigszins kan herkennen.<\/p>\n\n\n\n

Slaap is geen losstaand gezondheidsdoel. Het is verweven met hoe we denken, bewegen, herstellen en functioneren. Precies daarom krijgt slaap ook veel aandacht binnen longevity<\/strong>:<\/a> niet als losse ‘hack’, maar als onderdeel van de bredere omstandigheden waarin ons lichaam gedurende het leven functioneert.<\/p>\n\n\n\n

En juist omdat we iedere nacht opnieuw slapen, krijgen we iedere dag opnieuw de kans om daar goed voor te zorgen.<\/p>\n\n\n\n

Niet perfect slapen. Wel beter begrijpen wat jouw slaap ondersteunt.<\/strong><\/p>\n\n\n\n

Live better. Live longer.<\/strong><\/p>\n\n\n\n

Sources<\/h3>\n\n\n\n
    \n
  1. Patel AK, Reddy V, Shumway KR, Araujo JF. Physiology, Sleep Stages.<\/em> StatPearls. Updated 2024.<\/li>\n\n\n\n
  2. Weaver MD, et al. The importance of sleep regularity: a consensus statement of the National Sleep Foundation sleep timing and variability panel.<\/em> Sleep Health. 2023.<\/li>\n\n\n\n
  3. Gardiner C, Weakley J, Burke LM, et al. The effect of caffeine on subsequent sleep: A systematic review and meta-analysis.<\/em> Sleep Medicine Reviews. 2023;69:101764.<\/li>\n\n\n\n
  4. Xie W, Lu D, Liu S, et al. The optimal exercise intervention for sleep quality in adults: A systematic review and network meta-analysis.<\/em> Preventive Medicine. 2024;183:107955.<\/li>\n\n\n\n
  5. Qin S, Chee MWL. The Emerging Importance of Sleep Regularity on Cardiovascular Health and Cognitive Impairment in Older Adults.<\/em> Nature and Science of Sleep. 2024.<\/li>\n<\/ol>\n\n\n\n

    Disclaimer<\/strong>
    Dit artikel is uitsluitend bedoeld voor educatieve en informatieve doeleinden en is geen medisch advies. Gezondheid en individuele behoeften verschillen per persoon. Raadpleeg bij aanhoudende slaapproblemen, ernstige vermoeidheid of andere gezondheidsvragen een gekwalificeerde zorgprofessional.<\/em><\/p>","protected":false},"excerpt":{"rendered":"

    Slaap lijkt misschien het meest passieve deel van je dag. Je doet het licht uit, sluit je ogen en uren later begint een nieuwe ochtend. Maar terwijl jij slaapt, is je lichaam allesbehalve uitgeschakeld. Je hersenen doorlopen verschillende slaapfasen, je biologische klok bewaakt het ritme van dag en nacht en processen rond geheugen, stofwisseling, immuunfunctie […]<\/p>\n","protected":false},"author":3,"featured_media":14056,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[231],"tags":[],"class_list":["post-14055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-healthspan"],"acf":[],"yoast_head":"\nBeter slapen: wat gebeurt er tijdens je slaap?<\/title>\n<meta name=\"description\" content=\"Ontdek hoe slaapfasen, je biologische klok en dagelijkse gewoontes 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