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Quality sleep is just another habit we build over time from nothing more than our own choices. Welcome to another fact-based Strength By Fitness article
This is how you, too, will successfully build a far healthier life built upon regular quality sleep. Because the headline is 100% true, good, quality sleep is nothing but a habit, and we are all capable of creating and maintaining vastly healthier and better habits, no matter if we are talking about nutrition, food consumption, exercise, sleep, life, or alcohol.
A. Create a regular 6 to 8-hour sleep schedule ( as good as life allows you to do it ).
B. Embrace regular weekly exercise, preferably not right before nap time. Best of all is a mix of both Strength training & aerobic exercise, 2 to 5 days per week, and frequent lower effort walks.
C. Adopt healthy food habits built around nutritionally complete foods rich in fiber and protein, with most of your daily and weekly meals made up of higher-SPC foods.
D. Embrace a much healthier approach to your daily coffee consumption. That is, consume your 2 to 4 cups of black coffee no later than 1300, preferably between breakfast and roughly 11.00
E. Accept that alcohol makes you sleep worse, not better, on top of being detrimental to your health outcomes. Not to mention that it never helps with stress management.
F. Get some daylight, earlier in the day. Enough, but not too much sunshine is healthy for you. And getting it earlier in the day is even better, as it will also help you fortify a healthier and more regular day-night cycle.
Boom, now you are ready to reap much healthier and consistently good quality sleep because sleep quality, and schedule is a habit.
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The Science of Better Sleep.
Let us start from the beginning.
Lower quality, lower-SPC foods provide far too much junk energy, while simultaneously providing far too few micronutrients for the total amount of daily energy you end up eating. It is not the only problem with lower quality foods, such as fast food, sugary food, lower-SPC UPF foods, crisps, chips, low nutritional baked goods, canned fruits, ice cream et cetera.
But it is a fundamental problem with all lower-SPC foods.
Be it any of the ones already mentioned, or something else like hot dogs, or even decently sounding foods, that’s just not as nutrient-dense as you think, which makes those foods too high, in general, for most people, in energy per unit of nutrient, and subsequently they will therefore provide far too little essential, and helth friendly nutrients in total per day.
Consider this.
When you consider the outcome of eating too much of these types of food, or almost only living on said lower-SPC foods, you will hopefully see that you have an obvious issue at hand for your general health outcomes, and for most people, these types of poor nutritional, lower-SPC foods will become a real and permanent issue for excess body fat, too.
It is true that some people can do perfectly fine eating good, lower-SPC foods, because they either don’t eat much at all, or they eat a lot, but also train enough so that the higher total energy intake doesn’t ever become an issue.
But even the best, higher-level athletes in the world would be better off if most of their food intake were based on nutritionally rich, higher-SPC foods.
For most people alive today, training so much that you might need some lower SPC foods is not their reality.
A big part of this comes from the fact that these lower-SPC foods, with too little nutrients per unit of energy, make it far too easy to overconsume on total energy, while also making it even easier for your body to store excess energy as extra body fat, despite still missing many essential, and very beneficial nutrients.
This subpar way of eating is guaranteed to lead to worse health outcomes, but it will also harm your biological processes, making them far less efficient.
Poor nutrition simply puts breaks your racing car down, bit by bit, in many different small ways. And over a long enough period of time, the total damage of such underwhelming food preferences only increases, perpetually.
It also does not help your fitness capacity and progression in any way, shape, or form at all.
But, if that is not all, a lack of vital micronutrients, vitamins, and minerals doesn’t help your body sleep or function better either.
Not to mention that excess body fat, all by itself, and all the worsened metabolic health aspects it always leads to, given enough time, are also detrimental to the quality of your sleep.
Other metrics in your healthy fit lifestyle that negatively impact your sleep quality and habits.
A lack of exercise and nutrient deficiency will both result in worse sleep quality and less sleep in total.
Speaking of sleep and nutrition. All essential nutrients matter, as do our macros and fiber, too. Hence, me recommending a nutritionally rich, protein and fiber-rich, higher-SPC food approach as your big daily lifestyle driver.
But some nutrients pack a sleep-specific impact. So let us talk about the role of magnesium in improper sleep habits and outcomes.
Magnesium and its role in human sleep.
As you can see above, great sleep is not about getting one thing right; it’s really about you creating a good enough foundation based on a few sound, big-pillar habits. But our nutritional habits are part of it, and while it’s the total sum of your food habits that matters, individual nutrients play a role.
As such, while the total sum of it far outweighs any one individual choice, or nutrient, I am taking the opportunity in this free to read article to talk about one specific study, just to highlight the larger role that good nutritional choices play, for our health, and our sleep.
So, in this new study, which compiled data from 82 other studies, they tried to establish the mechanisms, effects, and application of people’s magnesium intake relative to their sleep.
Key findings.
Sufficient magnesium consumption from our daily food intake helps support better quality sleep through neurotransmitters, hormones, and inflammation control.
A nutritional magnesium deficiency, on the other hand, results in shorter, lighter, and markedly lower-quality sleep.
Cited study.
He C, Wang B, Chen X, Xu J, Yang Y, Yuan M. The Mechanisms of Magnesium in Sleep Disorders. Nat Sci Sleep. 2025 Oct 15;17:2639-2656. doi: 10.2147/NSS.S552646. PMID: 41116797; PMCID: PMC12535714.
Basic Mechanism Behind Magnesium’s Impact On Human Sleep.
Blocks NMDA, which reduces excitatory signalling.
Activates GABA, which in turn promotes increased calm & relaxation.
Boosts melatonin & serotonin, which both support a better circadian rhythm. Yes that’s a fancy word for your day-night cycle.
Lowers oxidative stress & inflammation (↓CRP, ↓ROS).
Balances Ca²⁺ / K⁺ , and aids the muscle’s ability to relax.
Aids better sleep cycle on a cellular level too.
Some outcomes.
On average, across all the studies, sufficient magnesium intake provided roughly 16 more minutes of total sleep.
While magnesium deficits are clearly linked to higher levels of bad inflammation, increased twitching & disturbed sleep quality.
Insufficient levels of magnesium are also tied to excessive daytime drowsiness.
What to do if deficient.
The biggest and first thing to do is also the easiest big pillar choice you should always be going for. Embrace nutritionally rich, higher-SPC food choices across virtually every meal of the week.
No matter your diet tribe preferences. You can be Indian, you can be plant-based, carnivore, high carb, low carb, vegan, muslim, asian, vegetarian, omnivore, or whatever, it does not matter.
Nutritionally rich foods that provide more micronutrients, fiber, and protein per unit of energy will always be beneficial for you. While the opposite will always remain true too, the more nutrient-poor foods you eat, the worse off you will become in health, fitness, and body composition.
Once you accept this simple reality, things will drastically improve for you.
Simply because nutrient-dense, higher-SPC foods make it so much easier to get all the health-friendly nutrients, essential vitamins, and minerals, and still remain within your real energy intake needs.
Yes, the big boring, eat good, quality food pillar is by far your best choice of action if you are deficient in any nutrient. Because it helps you with everything, and not just your mineral and vitamin intake.
And is it not better to learn how to get all, or as much as possible of all your nutritional needs, from the food you are already going to eat?
Real foods beat supplements easily.
Forget about all the wicked, weird social media diet tribes that propagate their exclusionary food ideas. “Don’t do carbs, don’t eat berries, skip all oats, fiber is not needed, fruit is crack.” The world is filled with so many harmful diet ideas.
In reality, it’s quite easy; pretty much every big food approach can be made to work on an individual level.
Which is great news, so if all that you wish to consider regarding your own food habits are your nutritional needs, fitness, and health outcomes, you can then, by making use of actual fact-based choices, make all the big diet tribes work for you.
Especially if you follow a higher-protein, higher-SPC approach. It works beautifully across all food tribes. Be it low-carb, high-fat, or a fiber and protein-rich, higher-carb, lower-fat approach.
Bad food tribes and food habits.
There are, sadly, plenty of food tribes that turn away from science and facts and preach to emotions and ideas instead of looking at actual outcomes for each individual. Approaching the subject of human health, fitness, and nutrition more like a religion instead of keeping it as the healthy, fact-based, and safe nutritional, health, and fitness coaching that it is.
So once the big, nutritionally rich, higher-SPC, protein and fiber-rich food habit is in place, start to assess sleep quality, health, fitness, and body composition outcomes over time. Things don’t go from bad to perfect overnight.
So it’s not about achieving a perfect sleep score according to a technical gadget or app. It’s more about you pushing your trajectories in the right direction and keeping them going in the right direction over time.
This holds true for health, fitness, food, and sleep, too.
But once you have your big pillars in place across food habits, weekly exercise, your sleep schedule, and daylight exposure. You can, of course, supplement some key nutrients if there is an issue.
But, with a few exceptions, once you have really nailed your food habits in that big pillar, higher-SPC way, there really should be next to a minimal need for supplementation.
Yes, no one can eat enough Creatine, not even the world’s biggest, most wickedly unsustainable carnivores will get enough Creatine from their food on a daily basis to match the body and brain benefits that a proper all-year-round creatine supplementation will provide.
Ergo: everyone should be supplementing with a little bit of daily Creatine. And B12 is another problem area for most people, not just vegans. Unlike Creatine, tho, B12, and many other nutrients can be readily found in many high-quality plant-based foods thats already enriched with it.
So, before you head to the store to buy magnesium because you think that’s the key to your perceived sleep issues, take a look at your actual food choices.
And also, take a look at your actual sleep. Is it really problematic? Or is it just perceived as a problem for you?
You don’t need 8 hours to have perfect sleep and sleep-related health outcomes.
The golden zone of “perfect” sleep.
The golden zone for health outcomes when it comes to sleep is 6 to 8 good hours of sleep per day on a regular schedule. Inside this zone, 6 hours provide health outcomes that are exactly as good as what 8 hours will give you.
This flawed claim that everyone needs 8 hours is very similar to the old debate about 10k steps. It´s a great target, but you can walk less or more, and it is going to be nothing but good. And for sleep, the vast majority of humans will get their best health, fitness, and body composition outcomes from 6 to 8 hours of sleep.
A smaller number of people, mostly women, might need up to 9 hours of sleep to max out their outcomes over time and feel fully rejuvenated.
So, supplementation should not be your main choice.
However, supplement if a test does reveal that you have nutritional deficiencies, and there is no way for you to improve your daily food habits in a good enough way.
Finally, as you can see in the cited study, nutritional deficiencies always matter; it’s not just about macros or energy in versus out. Our fiber intake matters, as do our antioxidants, minerals, and vitamins.
In the specific case of Magnesium and sleep, a low magnesium intake will disrupt sleep quality and rest, while poor sleep will further deplete magnesium, amongst many other things. And if there is no way for you to cover your nutritional needs with better, higher-SPC food choices that’s also smartly enriched, well then you should supplement what’s still an issue, because our daily intake of vitamins and minerals matters greatly over time.
Nutritional deficiencies.
I have previously written about the immense issue of nutritional deficiencies worldwide, and a lot of people fail to realise that billions of people around the world, many of whom are obese omnivores, are deficient in many nutrients. So, do take the time to get your food habits in check; just eating food to no end does not mean that you are getting all the micronutrients, minerals, vitamins, antioxidants, and fiber that your body needs.
Link down below to that article.
Related Content
Complete view of Higher-SPC, High-protein foods & fitness outcomes.
Obese & Nutritionally Deficient.
Quality Sleep and our Habits.

Maintain that nutritionally rich, high-protein, higher-SPC food intake, and fitness habits for life, Health and fitness is a habit, not a 4 week diet and exercise plan.
Cited studies For the Bigger Picture.
1. The 2005 high-protein study.
https://pubmed.ncbi.nlm.nih.gov/16002798/
2. Genetics matter but habits own the driver’s seat.
https://www.sciencedirect.com/science/article/abs/pii/S0167494323002601?s=09
3. Effect of resistance exercise on body composition, muscle strength and cardiometabolic health during weight loss .
https://bmjopensem.bmj.com/content/11/3/e002363?s=09
4. Trends in nutrition and health between 1900 and now.
https://www.sciencedirect.com/science/article/pii/S2213434423000221?via%3Dihub
5. Capturing what counts in muscle failure and sarcopenia.
https://pubmed.ncbi.nlm.nih.gov/40885204/?s=09
6. Low SPC, UPF and high-protein.
https://www.nature.com/articles/s42255-025-01247-4
7. High-protein myths.
https://www.sciencedirect.com/science/article/abs/pii/S0002916525002540?s=09
8. Non exercise, physical activity and its impact on health and mortality.
https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.124.072253?s=09
9. Health outcomes improve for every 3% of additional plant-based protein you consume.
https://ajcn.nutrition.org/article/S0002-9165(23)66282-3/pdf
You can also read this article over at Medium if you are a paying Medium Member.
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