
HIIT, But Make It HIRT
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This May HIRT A Bit

This is Ingrid Clay. She’s a professional athlete, personal trainer, chef*, and science writer.
*A vegan bodybuilding chef, no less:
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For those who prefer reading…
This writer does too 😉
We’ve previously reviewed her book, “Science of HIIT”, and we’re going to be talking a bit about High Intensity Interval Training today.
If you’d like to know a little more about the woman herself first, then…
Centr | Meet Ingrid: Your HIIT HIRT trainer
Yes, that is Centr, as in Chris Hemsworth’s personal training app, where Clay is the resident HIIT & HIRT expert & trainer.
What’s this HIIT & HIRT?
“HIIT” is High Intensity Interval Training, which we’ve written about before:
How To Do HIIT (Without Wrecking Your Body)
Basically, it’s a super-efficient way of working out, that gets better results than working out for longer with other methods, especially because of how it raises the metabolism for a couple of hours after training (this effect is called EPOC, by the way—Excessive Post-exercise Oxygen Consumption), and is a good thing.
You can read more about the science of it, in the above-linked main feature.
And HIRT?
“HIRT” is High Intensity Resistance Training, and is resistance training performed with HIIT principles.
See also: Chris Hemsworth’s Trainer Ingrid Clay Explains HIRT
An example is doing 10 reps of a resistance exercise (e.g., a dumbbell press) every minute on odd-numbered minutes, and 10 reps of a different resistance exercise (e.g. dumbbell squats) on even-numbered minutes.
If dumbbells aren’t your thing, it could be resistance bands, or even the floor (press-ups are a resistance exercise!)
For HIRT that’s not also a cardio exercise, gaps between different exercises can be quite minimal, as we only need to confuse the muscles, not the heart. So, effectively, it becomes a specially focused kind of circuit training!
If doing planks though, you might want to check out Clay’s troubleshooting guide:
Want more from Clay?
Here she gives a full 20-minute full-body HIIT HIRT workout:
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Enjoy!
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Water’s Counterintuitive Properties
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝Why are we told to drink more water for everything, even if sometimes it seems like the last thing we need? Bloated? Drink water. Diarrhea? Drink water. Nose running like a tap? Drink water❞
While water will not fix every ill, it can fix a lot, or at least stop it from being worse!
Our bodies are famously over 60% water (exact figure will depend on how well-hydrated you are, obviously, as well as your body composition in terms of muscle and fat). Our cells (which are mostly full of mostly water) need replacing all the time, and almost everything that needs transporting almost anywhere is taken there by blood (which is also mostly water). And if we need something moving out of the body? Water is usually going to be a large part of how it gets ejected.
In the cases of the examples you gave…
- Bloating: bloating is often a matter of water retention, which often happens as a result of having too much salt, and/or sometimes too much fat. So the body’s homeostatic system (the system that tries to maintain all kinds of equilibrium, keeping salt balance, temperature, pH, and many other things in their respective “Goldilocks zones”) tries to add more water to where it’s needed to balance out the salt etc.
- Consequently, drinking more water means the body will note “ok, balance restored, no need to keep retaining water there, excess salts being safely removed using all this lovely water”.
- Diarrhea: this is usually a case of a bacterial infection, though there can be other causes. Whether for that reason or another, the body has decided that it needs to give your gut an absolute wash-out, and it can only do that from the inside—so it uses as much of the body’s water as it needs to do that.
- Consequently, drinking more water means that you are replenishing the water that the body has already 100% committed to using. If you don’t drink water, you’ll still have diarrhea, you’ll just start to get dangerously dehydrated.
- Runny nose: this is usually a case of either fighting a genuine infection, or else fighting something mistaken for a pathogen (e.g. pollen, or some other allergen). The mucus is an important part of the body’s defense: it traps the microbes (be they bacteria, virus, whatever) and water-slides them out of the body.
- Consequently, drinking more water means the body can keep the water-slide going. Otherwise, you’ll just get gradually more dehydrated (because as with diarrhea, your body will prioritize this function over maintaining water reserves—water reserves are there to be used if necessary, is the body’s philosophy) and if the well runs dry, you’ll just be dehydrated and have a higher pathogen-count still in your body.
Some previous 10almonds articles that might interest you:
- Hydration Mythbusting
- When To Take Electrolytes (And When We Shouldn’t!)
- Keeping Your Kidneys Healthy (Especially After 60)
Would you like this section to be bigger? If so, send us more questions!
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- Bloating: bloating is often a matter of water retention, which often happens as a result of having too much salt, and/or sometimes too much fat. So the body’s homeostatic system (the system that tries to maintain all kinds of equilibrium, keeping salt balance, temperature, pH, and many other things in their respective “Goldilocks zones”) tries to add more water to where it’s needed to balance out the salt etc.
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The Counterintuitive Dos and Don’ts of Nail Health
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I take a vitamin supplement for strengthening my nails (particularly one of my big toes!) – but they are running out! What do you recommend for strengthening nails? What is/are the key ingredient(s)?❞
Vitamin-wise, biotin (vitamin B7) is an underrated and very important one. As a bonus, it’s really good for your hair too (hair and nails being made of fundamentally the same “stuff”. Because it has exceptionally low toxicity, it can be taken up to 10,000% of the NRV, so if shopping for supplements, a high biotin content is better than a low one.
A lot of products marketed as for “skin, hair, and nails” focus on vitamins A and E, which are good for the skin but aren’t so relevant for nails.
Nutritionally, getting plenty of protein (whatever form you normally take it is fine) is also important since keratin (as nails are made of) is a kind of protein.
Outside of nutritional factors, a few other considerations:
- Testosterone strengthens nails, and declining testosterone levels (as experienced by most men over the age of 45) can result in weaker nails. So for men over 45 especially, a diet that favors testosterone (think foods rich in magnesium and zinc) is good.
- Because estrogen doesn’t do for women’s nails what testosterone does for men’s nails, increasing our magnesium and zinc intake won’t help our nails (but it’s still good for other things, including energy levels in the day and good sleep at night, and most people are deficient in magnesium anyway)
- Those of us who enjoy painted nails would do well to let our nails go without polish sometimes, as it can dry them out. And, acrylic nails are truly ruinous to nail health, as are gel nails (the kind that use a UV lamp to harden them—which is also bad for the skin)
- When nails are brittle, it can be tempting to soak them to reduce their brittleness. However, this is actually counterproductive, as the water will leech nutrients from the nails, and by the time you’ve been out of the footbath (for example) for about an hour, your nails will bemore brittle than before you soaked them.
- Use a moisturizing lotion or nail-oil instead—bonus if it contains biotin, keratin, and/or other helpful nutrients.
- Keep yourself hydrated, too! Hydration that comes to your nails from the inside will deliver nutrients, rather than removing them.
About those supplements: we don’t sell them (or anything else) but for your convenience, here are some great ones (this writer takes pretty much the same, just a different brand because I’m in a different country):
Magnesium Gummies (600mg) & Biotin Gummies (10,000µg)
Enjoy!
❝I was wondering whether there were very simple, clear bullet points or instructions on things to be wary of in Yoga.❞
That’s quite a large topic, and not one that lends itself well to being conveyed in bullet points, but first we’ll share the article you sent us when sending this question:
Tips for Avoiding Yoga Injuries
…and next we’ll recommend the YouTube channel @livinleggings, whose videos we feature here from time to time. She (Liv) has a lot of good videos on problems/mistakes/injuries to avoid.
Here’s a great one to get you started:
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Butter vs Margarine
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Butter vs Margarine
Yesterday, we asked you for your (health-related) opinion on butter vs margarine, and got the above-depicted, below-described, set of responses:
- A little over 60% said butter is a health food and margarine is basically plastic with trans fats
- A little over 20% said that both are woeful and it’s better to avoid both
- A little over 10% said that margarine is a lighter option, and butter is a fast track to cardiovascular disease.
Comments included (we will summarize/paraphrase, for space):
- “…in moderation, though”
- “I’m vegan so I use vegan butter but I know it’s not great, so I use it sparingly”
- “butter is healthy if and only if it’s grass-fed”
- “margarine has unpronounceable ingredients”
To address those quickly:
- “…in moderation” is a stipulation with which one can rarely go too far wrong
- Same! Speaking for myself (your writer here, hi) and not for the company
- Grass-fed is indeed better; alas that so little of it is grass-fed, in the US!
- Butter contains eicosatrienoic acid, linolelaidic acid, and more*. Sometimes big words don’t mean that something is worse for the health, though!
So, what does the science say?
Butter is a health food: True or False?
True or False, depending on amount! Moderation is definitely key, but we’ll return to that (and why not to have more than a small amount of butter) later. But it is a rich source of many nutrients, iff it’s grass-fed, anyway.
The nutritional profile of something isn’t a thing that’s too contentious, so rather than take too much time on it, in this case we’ll point you back up to the scientific paper we linked above, or if you prefer a pop-science rendering, here’s a nice quick rundown:
7 Reasons to Switch to Grass-Fed Butter
Margarine is basically plastic with trans fats: True or False?
False and usually False now, respectively, contingently.
On the first part: chemically, it’s simply not “basically plastic” and everything in it is digestible
On the second part: it depends on the margarine, and here’s where it pays to read labels. Historically, margarines all used to be high in trans fats (which are indeed woeful for the health). Nowadays, since trans fats have such a (well-earned) bad press, there are increasingly many margarines with low (or no) trans fats, and depending on your country, it may be that all margarines no longer have such:
❝It’s a public health success story. Consumers no longer have to worry about reading product nutritional labels to see if they contain hydrogenated oils and trans fats. They can just know that they no longer do❞
Source: Margarines now nutritionally better than butter after hydrogenated oil ban
So this is one where the science is clear (trans fats are unequivocally bad), but the consumer information is not always (it may be necessary to read labels, to know whether a margarine is conforming to the new guidelines).
Butter is a fast track to cardiovascular disease: True or False?
True or False depending on amount. In moderation, predictably it’s not a big deal.
But for example, the World Health Organization recommends that saturated fats (of which butter is a generous source) make up no more than 10% of our calorie intake:
Source: Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline
So if you have a 2000 kcal daily intake, that would mean consuming not more than 200 kcal from butter, which is approximately two tablespoons.
If you’d like a deeper look into the complexities of saturated fats (for and against), you might like our previous main feature specifically about such:
Can Saturated Fats Be Healthy?
Enjoy!
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Sprout Your Seeds, Grains, Beans, Etc
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Good Things Come In Small Packages
“Sprouting” grains and seeds—that is, allowing them to germinate and begin to grow—enhances their nutritional qualities, boosting their available vitamins, minerals, amino acids, and even antioxidants.
You may be thinking: surely whatever nutrients are in there, are in there already; how can it be increased?
Well, the grand sweeping miracle of life itself is beyond the scope of what we have room to cover today, but in few words: there are processes that allow plants to transform stuff into other stuff, and that is part of what is happening.
Additionally, in the cases of some nutrients, they were there already, but the sprouting process allows them to become more available to us. Think about the later example of how it’s easier to eat and digest a ripe fruit than an unripe one, and now scale that back to a seed and a sprouted seed.
A third way that sprouting benefits us is by reducing“antinutrients”, such as phytic acid.
Let’s drop a few examples of the “what”, before we press on to the “how”:
- Enhancement of attributes of cereals by germination and fermentation: a review
- Sprouting characteristics and associated changes in nutritional composition of cowpea (Vigna unguiculata)
- Phytic acid, in vitro protein digestibility, dietary fiber, and minerals of pulses as influenced by processing methods
- Effects of germination on the nutritional properties, phenolic profiles, and antioxidant activities of buckwheat
- Effect of several germination treatments on phosphatases activities and degradation of phytate in faba bean (Vicia faba L.) and azuki bean (Vigna angularis L.)
Sounds great! How do we do it?
First, take the seeds, grains, nuts, beans, etc that you’re going to sprout. Fine examples to try for a first sprouting session include:
- Grains: buckwheat, brown rice, quinoa
- Legumes: soy beans, black beans, kidney beans
- Greens: broccoli, mustard greens, radish
- Nuts/seeds: almonds, pumpkin seeds, chia seeds
Note: whatever you use should be as unprocessed as possible to start with:
- On the one hand, you’d be surprised how often “life finds a way” when it comes to sprouting ridiculous choices
- On the other hand, it’s usually easier if you’re not trying to sprout blanched almonds, split lentils, rolled oats, or toasted hulled buckwheat.
Second, you will need clean water, a jar with a lid, muslin cloth or similar, and a rubber band.
Next, take an amount of the plants you’ll be sprouting. Let’s say beans of some kind. Try it with ¼ cup to start with; you can do bigger batches once you’re more confident of your setup and the process.
Rinse and soak them for at least 24 hours. Take care to add more water than it looks like you’ll need, because those beans are thirsty, and sprouting is thirsty work.
Drain, rinse, and put them in a clean glass jar, covering with just the muslin cloth in place of the lid, held in place by the rubber band. No extra water in it this time, and you’re going to be storing the jar upside down (with ventilation underneath, so for example on some sort of wire rack is ideal) in a dark moderately warm place (e.g. 80℉ / 25℃ is often ideal, but it doesn’t have to be exact, you have wiggle-room, and some things will enjoy a few degrees cooler or warmer than that)
Each day, rinse and replace until you see that they are sprouting. When they’re sprouting, they’re ready to eat!
Unless you want to grow a whole plant, in which case, go for it (we recommend looking for a gardening guide in that case).
But watch out!
That 80℉ / 25℃ temperature at which our sprouting seeds, beans, grains etc thrive? There are other things that thrive at that temperature too! Things like:
- E. coli
- Salmonella
- Listeria
…amongst others.
So, some things to keep you safe:
- If it looks or smells bad, throw it out
- If in doubt, throw it out
- Even if it looks perfect, blanch it (by boiling it in water for 30 seconds, before rinsing it in cold water to take it back to a colder temperature) before eating it or refrigerating it for later.
- When you come back to get it from the fridge, see once again points 1 and 2 above.
- Ideally you should enjoy sprouted things within 5 days.
Want to know more about sprouting?
You’ll love this book that we reviewed recently:
The Sprout Book – by Doug Evans
Enjoy!
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The Green Roasting Tin – by Rukmini Iyer
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You may be wondering: “do I really need a book to tell me to put some vegetables in a roasting tin and roast them?” and maybe not, but the book offers a lot more than that.
Indeed, the author notes “this book was slightly in danger of becoming the gratin and tart book, because I love both”, but don’t worry, most of the recipes are—as you might expect—very healthy.
As for formatting: the 75 recipes are divided first into vegan or vegetarian, and then into quick/medium/slow, in terms of how long they take.
However, even the “slow” recipes don’t actually take more effort, just, more time in the oven.
One of the greatest strengths of this book is that not only does it offer a wide selection of wholesome mains, but also, if you’re putting on a big spread, these can easily double up as high-class low-effort sides.
Bottom line: if you’d like to eat more vegetables in 2024 but want to make it delicious and with little effort, put this book on your Christmas list!
Click here to check out The Green Roasting Tin, and level-up yours!
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Strong Bones Forever − by Dr. Raymond Hinish
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This doctor of pharmacy would like for fewer people to take (or need to take) osteoporosis medications. Indeed, as the subtitle suggests, the focus here is on drug-free solutions.
And not just because “natural is better” as an argument without evidence, rather, he talks about the limitations and drawbacks of osteoporosis medications (which we wrote about previously, but he has more room to go into more detail), whereupon some osteoporosis meds may do more harm than good.
His method boasts improvements in bone density by 11% or more in two years, and covers such topics as:
- which calcium (and why no, dairy is not what you want; it contains things that inhibit calcium absorption, so the calcium will be stuck in your arteries instead of your bones)
- which minerals are more important than calcium, and why
- common mistakes that many people make that sabotage their bone density
It’s about more than just diet though; he does also talk about hormones, and not just other lifestyle factors, but also many “industry secrets” that aren’t really secrets per se, it’s just, people outside of the industry don’t usually know them—pertaining to things like how to get the most out of bone density tests (i.e. how to get better accuracy), how to meaningfully assess fracture risk, and, if choosing to take osteoporosis meds, how to minimize the risks and maximize the benefits.
The style is very direct and informational, very easy to read, remarkably jargon-free, and our only criticism is that there is no bibliography.
Bottom line: if you’d like to improve your bone density, this book can certainly help with that.
Click here to check out Strong Bones Forever, and have strong bones forever!
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