Sleep Tracking, For Five Million Nights
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5 Sleep Phenotypes, By Actual Science
You probably know people can be broadly divided into “early birds” and “night owls”:
Early Bird Or Night Owl? Genes vs Environment
…and then the term “hummingbird” gets used for a person who flits between the two.
That’s three animals so far. If you read a book we reviewed recently, specifically this one:
The Power of When – by Dr. Michael Breus
…then you may have used the guide within to self-diagnose your circadian rhythm type (chronotype) according to Dr. Breus’s system, which divides people into bears, lions, wolves, and dolphins.
That’s another four animals. If you have a FitBit, it can “diagnose” you with being those and/or a menagerie of others, such as giraffe, hedgehog, parrot, and tortoise:
How Fitbit Developed the Sleep Profile Experience (Part 2 – Sleep Animals)
Five million nights
A team of researchers recently took a step away from this veritable zoo of 11 different animals and counting, and used a sophisticated modelling system to create a spatial-temporal map of people’s sleep habits, and this map created five main “islands” that people’s sleep habits could settle on, or sometimes move from island to island.
Those “five million nights” by the way? It was actually 5,095,798 nights! You might notice that would take from the 2020s to the 15970s to complete, so this was rather a matter of monitoring 33,152 individuals between January and October of the same year. Between them, they got those 5,095,798 nights of sleep (or in some cases, nights of little or no sleep, but still, they were there for the nights).
The five main phenotypes that the researchers found were:
- What we think of as “normal” sleep. In this phenotype, people get about eight hours of uninterrupted sleep for at least six days in a row.
- As above for half the nights, but they only sleep for short periods of time in bouts of less than three hours the other half.
- As per normal sleep, but with one interrupted night per week, consisting of a 5 hour sleep period and then broken sleep for a few more hours.
- As per normal sleep generally, but with occasional nights in which long bouts of sleep are separated by a mid-sleep waking.
- Sleeping for very short periods of time every night. This phenotype was the rarest the researchers found, and represents extremely disrupted sleep.
As you might suspect, phenotype 1 is healthier than phenotype 5. But that’s not hugely informational, as the correlation between getting good sleep and having good health is well-established. So, what did the study teach us?
❝We found that little changes in sleep quality helped us identify health risks. Those little changes wouldn’t show up on an average night, or on a questionnaire, so it really shows how wearables help us detect risks that would otherwise be missed.❞
More specifically,
❝We found that the little differences in how sleep disruptions occur can tell us a lot. Even if these instances are rare, their frequency is also telling. So it’s not just whether you sleep well or not – it’s the patterns of sleep over time where the key info hides❞
…and, which gets to the absolute point,
❝If you imagine there’s a landscape of sleep types, then it’s less about where you tend to live on that landscape, and more about how often you leave that area❞
In other words: if your sleep pattern is not ideal, that’s one thing and it’d probably be good to address it, by improving your sleep. However, if your sleep pattern changes phenotype without an obvious known reason why, this may be considered an alarm bell warning of something else that needs addressing, which may be an underlying illness or condition—meaning it can be worthwhile being a little extra vigilant when it comes to regular health screenings, in case something new has appeared.
Want to read more?
You can read the paper in full here:
Five million nights: temporal dynamics in human sleep phenotypes
Take care!
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Beat Osteoporosis with Exercise – by Dr. Karl Knopf
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There are a lot of books about beating osteoporosis, and yet when it comes to osteoporosis exercises, it took us some work to find a good one. But, this one’s it!
A lot of books give general principles and a few sample exercises. This one, in contrast, gives:
- An overview of osteopenia and osteoporosis, first
- A brief overview of non-exercise osteoporosis considerations
- Principles for exercising a) to reduce one’s risk of osteoporosis b) if one has osteoporosis
- Clear explanations of about 150 exercises that fit both categories
This last item’s important, because a lot of popular advice is exercises that are only good for one or the other (given that a lot of things that strengthen a healthy person’s bones can break the bones of someone with osteoporosis), so having 150 exercises that are safe and effective in both cases, is a real boon.
That doesn’t mean you have to do all 150! If you want to, great. But even just picking and choosing and putting together a little program is good.
Bottom line: if you’d like a comprehensive guide to exercise to keep you strong in the face of osteoporosis, this is a great one.
Click here to check out Beat Osteoporosis With Exercise, and stay strong!
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Small Pleasures – by Ryan Riley
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When Hippocrates said “let food be thy medicine, and let medicine be thy food”, he may or may not have had this book in mind.
In terms of healthiness, this one’s not the very most nutritionist-approved recipe book we’ve ever reviewed. It’s not bad, to be clear!
But the physical health aspect is secondary to the mental health aspects, in this one, as you’ll see. And as we say, “mental health is also just health”.
The book is divided into three sections:
- Comfort—for when you feel at your worst, for when eating is a chore, for when something familiar and reassuring will bring you solace. Here we find flavor and simplicity; pastas, eggs, stews, potato dishes, and the like.
- Restoration—for when your energy needs reawakening. Here we find flavors fresh and tangy, enlivening and bright. Things to make you feel alive.
- Pleasure—while there’s little in the way of health-food here, the author describes the dishes in this section as “a love letter to yourself; they tell you that you’re special as you ready yourself to return to the world”.
And sometimes, just sometimes, we probably all need a little of that.
Bottom line: if you’d like to bring a little more joie de vivre to your cuisine, this book can do that.
Click here to check out Small Pleasures, and rekindle joy in your kitchen!
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Built to Move – by Kelly starrett & Juliet Starrett
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In our everyday lives, for most of us anyway, it’s not too important to be able to run a marathon or leg-press a car. Rather more important, however, are such things as:
- being able to get up from the floor comfortably
- reach something on a high shelf without twinging a shoulder
- being able to put our socks on without making a whole plan around this task
- get accidentally knocked by an energetic dog or child and not put our back out
- etc
Starrett and Starrett, of “becoming a supple leopard” fame, lay out for us how to make sure our mobility stays great. And, if it’s not already where it needs to be, how to get there.
The “ten essential habits” mentioned in the subtitle “ten essential habits to help you move freely and live fully”, in fact also come with ten tests. No, not in the sense of arduous trials, but rather, mobility tests.
For each test, it’s explained to us how to score it out of ten (this is an objective assessment, not subjective). It’s then explained how to “level up” whatever score we got, with different advices for different levels of mobility or immobility. And if we got a ten, then of course, we just build the appropriate recommended habit into our daily life, to keep it that way.
The writing style is casual throughout, and a strong point of the book is its very clear illustrations, too.
Bottom line: if you’d like to gain/maintain good mobility (at any age), this book gives a very reliable outline for doing so.
Click here to check out Built to Move, and take care of your body!
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Eat Well With Arthritis – by Emily Johnson, with Dr. Deepak Ravindran
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Author Emily Johnson was diagnosed with arthritis in her early 20s, but it had been affecting her life since the age of 4. Suffice it to say, managing the condition has been integral to her life.
She’s written this book with not only her own accumulated knowledge, but also the input of professional experts; the book contains insights from chronic pain specialist Dr. Deepak Ravindran, and gets an additional medical thumbs-up in a foreword by rheumatologist Dr. Lauren Freid.
The recipes themselves are clear and easy, and the ingredients are not obscure. There’s information on what makes each dish anti-inflammatory, per ingredient, so if you have cause to make any substitutions, that’s useful to know.
Speaking of ingredients, the recipes are mostly plant-based (though there are some chicken/fish ones) and free from common allergens—but not all of them are, so each of those is marked appropriately.
Beyond the recipes, there are also sections on managing arthritis more generally, and information on things to get for your kitchen that can make your life with arthritis a lot easier!
Bottom line: if you have arthritis, cook for somebody with arthritis, or would just like a low-inflammation diet, then this is an excellent book for you.
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What Matters Most For Your Heart?
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Eat More (Of This) For Lower Blood Pressure
Heart disease remains the world’s #1 killer. We’d say “and in the US, it’s no different”, but in fact, the US is #1 country for heart disease. So, it’s worse and perhaps some extra care is in order.
But how?
What matters the most
Is it salt? Salt plays a part, but it’s not even close to the top problem:
Hypertension: Factors Far More Relevant Than Salt
Is it saturated fat? Saturated fat from certain sources plays more of a role than salt, but other sources may not be so much of an issue:
Can Saturated Fats Be Heart-Healthy?
Is it red meat? Red meat is not great for the heart (or for almost anything else, except perhaps anemia):
The Whys and Hows of Cutting Meats Out Of Your Diet
…but it’s still not the top dietary factor.
The thing many don’t eat
All the above are foodstuffs that a person wanting a healthier heart and cardiovascular system in general might (reasonably and usually correctly) want to cut down, but there’s one thing that most people need more of:
Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
And this is especially true for heart health:
❝Dietary fiber has emerged as a crucial yet underappreciated part of hypertension management.
Our comprehensive analysis emphasizes the evidence supporting the effectiveness of dietary fiber in lowering blood pressure and reducing the risk of cardiovascular events.❞
Specifically, she and her team found:
- Each additional 5g of fiber per day reduces blood pressure by 2.8/2.1 (systolic/diastolic, in mmHG)
- Dietary fiber works in several ways to improve cardiovascular health, including via gut bacteria, improved lipids profiles, and anti-inflammatory effects
- Most people are still only getting a small fraction (¼ to ⅓) of the recommended daily amount of fiber. To realize how bad that is, imagine if you consumed only ¼ of the recommended daily amount of calories every day!
You can read more about it here:
Dietary fiber critical in managing hypertension, international study finds
That’s a pop-science article, but it’s still very informative. If you prefer to read the scientific paper itself (or perhaps as well), you can find it below
Recommendations for the Use of Dietary Fiber to Improve Blood Pressure Control
Want more from your fiber?
Here’s yet another way fiber improves cardiometabolic health, hot off the academic press (the study was published just a couple of weeks ago):
How might fiber lower diabetes risk? Your gut could hold the clues
this pop-science article was based on this scientific paper
Gut Microbiota and Blood Metabolites Related to Fiber Intake and Type 2 Diabetes
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The Worst Cookware Lurking In Your Kitchen (Toxicologist Explains)
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Dr. Yvonne Burkart gives us a rundown of the worst offenders, and what to use instead:
Hot mess
The very worst offender is non-stick cookware, the kind with materials such as Teflon. These are the most toxic, due to PFAS chemicals.
Non-stick pans release toxic gases, leach chemicals into food, and release microplastic particles, which can accumulate in the body.
One that a lot of people don’t think about, in that category, is the humble air-fryer, which often as not has a non-stick cooking “basket”. These she describes as highly toxic, as they combine plastic, non-stick coatings, and high heat, which can release fumes and other potentially dangerous chemicals into the air and food.
You may be wondering: how bad is it? And the answer is, quite bad. PFAS chemicals are linked to infertility, hypertension in pregnancy, developmental issues in children, cancer, weakened immune systems, hormonal disruption, obesity, and intestinal inflammation.
Dr. Burkart’s top picks for doing better:
- Pure ceramic cookware: top choice for safety, particularly brands like Xtrema, which are tested for heavy metal leaching.
- Carbon steel & cast iron: durable and safe; can leach iron in acidic foods (for most people, this is a plus, but some may need to be aware of it)
- Stainless steel: lightweight and affordable but can leach nickel and chromium in acidic foods at high temperatures. Use only if nothing better is available.
And specifically as alternatives to air-fryers: glass convection ovens or stainless steel ovens are safer than conventional air fryers. The old “combination oven” can often be a good choice here.
For more on all of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- PFAS Exposure & Cancer: The Numbers Are High
- It’s Not Fantastic To Be Plastic ← for the closely related topic of microplastics and nanoplastics
Take care!
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