The Magic of L-theanine
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All The Benefits Of Caffeine And More, Without The Drawbacks? What’s The Catch?
It just takes one extra supplement.
For many of us, our morning brew is practically a ritual, but caffeine can also cause all kinds of problems ranging from caffeine jitters to caffeine crashes to caffeine addiction and withdrawal. Surely, something could be better?
Well, yes it could! You doubtlessly know about green tea’s antioxidant properties, but its amino acid, l-theanine (which can be taken as a supplement with coffee, if you don’t enjoy green tea) has so much more to offer:
- L-theanine has been found to reduce stress responses—and let’s face it, when we most want/need a coffee is often when facing stress
- It also reduces anxiety, making it a very safe “downer” without the problems of, for example, alcohol—or other potentially addictive substances
- It’s far more than just that, though! Paradoxically, l-theanine also improves alertness (what other calming things promote alertness? Not so many)
- Part of its trick is that it also improves accuracy—whereas stimulants like caffeine may produce a twitchy, jumpy, responsiveness, l-theanine’s signature effect is a calm state of sharp readiness. Caffeine works by stimulating the adrenal gland and increasing blood pressure, while simultaneously blocking adenosine receptors so that your body doesn’t notice its own tiredness—which is why you’re likely to crash later, when the tiredness that had been masked, all hits at once. Instead, l-theanine taken with caffeine acts as a moderator of that, making for a longer, gentler curve. In terms of subjective experience, what this can mean for many people is: no more caffeine jitters!
- All this means that while l-theanine can boost all kinds of cognitive function, including alertness and accuracy, many like to take in the evening as it can also promote a good night’s sleep, ready to be at your best the next day.
- How much to take? 200mg is a commonly used dosage, which in supplement terms is usually a single capsule. A lot easier to take than the 40 cups of green tea that this dosage would otherwise be!
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Kettlebell Sport & Fitness Basics – by Audrey Burgio
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Professional athlete & coach Audrey Burgio covers how to get a full-body workout that will make you stronger and more flexible (there are stretches here too, and many exercises are about strength and suppleness), as well as building stability and balance. In short, more robust and with better mobility.
Which is one of the best things about kettlebell training—unlike dumbbells and barbells, a kettlebell requires the kind of strength that one has to use when doing many routine tasks, from carrying the groceries to moving a big pan in the kitchen.
Because it is otherwise absolutely possible to look like Arnold Schwarzenegger in the gym, and then still pull a muscle moving something at home because the angle was awkward or somesuch!
However, making one’s body so robust does require training safely, and the clear instructions in this book will help the reader avoid injuries that might otherwise be incurred by just picking up some kettlebells and guessing.
Bottom line: if you’d like to get strong and supple from the comfort of your own home, this book can definitely lead the way!
Click here to check out Kettlebell Sport & Fitness Basics, and see the difference in your body!
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What’s Lurking In Your Household Air?
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As individuals, we can’t do much about the outside air. We can try to spend more time in green spaces* and away from traffic, and we can wear face-masks—as was popular in Tokyo and other such large cities long before the pandemic struck.
*The well-known mental health benefits aside (and contrary to British politician Amber Rudd’s famous assertion in a televised political debate that “clean air doesn’t grow on trees”), clean air comes mostly from trees—their natural process of respiration scrubs not only carbon dioxide, but also pollutants, from the air before releasing oxygen without the pollutants. Neat!
See also this study: Site new care homes near trees and away from busy roads to protect residents’ lungs
We are fortunate to be living in a world where most of us in industrialized countries can exercise a great degree of control over our home’s climate. But, what to do with all that power?
Temperature
Let’s start with the basics. Outside temperature may vary, but you probably have heating and air conditioning. There’s a simple answer here; the optimal temperature for human comfort and wellbeing is 20℃ / 68℉:
Scientists Identify a Universal Optimal Temperature For Life on Earth
Note: this does not mean that that is the ideal global average temperature, because that would mean the polar caps are completely gone, the methane stored there released, many large cities underwater, currently hot places will be too hot for human life (e.g. outside temperatures above human body temperature), there will be mass extinctions of many kinds of animals and plants, including those we humans require for survival, and a great proliferation of many bugs that will kill us. Basically we need diversity for the planet to survive, arctic through to tropical and yes, even deserts (deserts are important carbon sinks!). The ideal global average temperature is about 14℃ (we currently have about 15℃ and rising).
But, for setting the thermostat in your home, 20℃ / 68℉ is perfect for most people, though down as far as 17℃ / 61℉ is fine too, provided other things such as humidity are in order. In fact, for sleeping, 18℃ / 62℉ is ideal. This is because the cooler temperature is one of the several things that tell our brain it is nighttime now, and thus trigger secretion of melatonin.
If you’re wondering about temperatures and respiratory viruses, by the way, check out:
The Cold Truth About Respiratory Infections: The Pathogens That Came In From The Cold
Humidity
Most people pay more attention to the temperature in their home than the humidity, and the latter is just as important:
❝Conditions that fall outside of the optimal range of 40–60% can have significant impacts on health, including facilitating infectious transmission and exacerbating respiratory diseases.
When humidity is too low, it can cause dryness and irritation of the respiratory tract and skin, making individuals more susceptible to infections.
When humidity is too high, it can create a damp environment that encourages the growth of harmful microorganisms like mould, bacteria, and viruses.❞
~ Dr. Gabriella Guarnieri et al.
So, if your average indoor humidity falls outside of that range, consider getting a humidifier or dehumidifier, to correct it. Example items on Amazon, for your convenience:
Humidity monitor | Humidifier | Dehumidifier
See also, about a seriously underestimated killer:
Pneumonia: Prevention Is Better Than Cure
Now, one last component to deal with, for perfect indoor air:
Pollution
We tend to think of pollution as an outdoors thing, and indeed, the pollution in your home will (hopefully!) be lower than that of a busy traffic intersection. However…
- The air you have inside comes from outside, and that matters if you’re in an urban area
- Even in suburban and rural areas, general atmospheric pollutants will reach you, and if you’ve ever been subject to wildfire smoke, you’ll know that’s no fun either.
- Gas appliances in the home cause indoor pollution, even when carbon monoxide is within levels considered acceptable. This polluting effect is much stronger for open gas flames (such as on gas cookers/stoves, or gas fires), than for closed gas heating systems (such as a gas-powered boiler for central heating).
- Wood stoves/fireplaces are not an improvement, in fact they are worse, and don’t get us started on coal. You should not be breathing these things, and definitely should not be burning them in an enclosed space.
- That air conditioning, humidifier, dehumidifier? They may be great for temperature and humidity, but please clean/change the filter more often than you think is necessary, or things will grow there and then your device will be adding pathogens to the air as it goes.
- Plug-in air-freshening devices? They may smell clean, but they are effectively spraying cleaning fluids into your lungs. So please don’t.
So, what of air purifiers? They can definitely be of benefit. for example:
But watch out! Because if you don’t clean/change the filter regularly, guess what happens! That’s right, it’ll be colonized with bacteria/fungus and then be blowing those at you.
And no, not all of them will be visible to the naked eye:
Is Unnoticed Environmental Mold Harming Your Health?
Taking a holistic approach
The air is a very important factor for the health of your lungs (and thus, for the health of everything that’s fed oxygen by your lungs), but there are more things we can do as well:
Seven Things To Do For Good Lung Health!
Take care!
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Is A Visible Six-Pack Obtainable Regardless Of Genetic Predisposition?
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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 😎
❝Is it possible for anyone to get 6-pack abs (even if genetics makes it easier or harder) and how much does it matter for health e.g. waist size etc?❞
Let’s break it down into two parts:
Is it possible for anyone to get 6-pack abs (even if genetics makes it easier or harder)?
Short answer: no
First, a quick anatomy lesson: while “abs” (abdominal muscles) are considered in the plural and indeed they are, what we see as a six-pack is actually only one muscle, the rectus abdominis, which is nestled in between other abdominal muscles that are beyond the scope of our answer here.
The reason that the rectus abdominis looks like six muscles is because there are bands of fascia (connective tissue) lying over it, so we see where it bulges between those bands.
The main difference genes make are as follows:
- Number of fascia bands (and thus the reason that some people get a four-, six-, eight-, or rarely, even ten-pack). Obviously, no amount of training can change this number, any more than doing extra bicep curls will grow you additional arms.
- Density of muscle fibers. Some people have what has been called “superathlete muscle type”, which, while prized by Olympians and other athletes, is on bodybuilding forums less glamorously called being a “hard gainer”. What this means is that muscle fibers are denser, so while training will make muscles stronger, you won’t see as much difference in size. This means that size for size, the person with this muscle type will always be stronger than someone the same size without it, but that may be annoying if you’re trying to build visible definition.
- Twitch type of muscle fibers. Some people have more fast-twitch fibers, some have more slow-twitch fibers. Fast-twitch fibers are better suited for visible abs (and, as the name suggests, quick changes between contracting and relaxing). Slow-twitch fibers are better for endurance, but yield less bulky muscles.
- Inclination to subcutaneous fat storage. This is by no means purely genetic; hormones make the biggest difference, followed by diet. But, genes are an influencing factor, and if your body fat percentage is inclined to be higher than someone else’s, then it’ll take more work to see muscle definition under that fat.
The first of those items is why our simple answer is “no”; because some people are destined to, if muscle is visible, have a four-, eight, or (rarely) ten-pack, making a six-pack unobtainable.
It’s worth noting here that while a bigger number is more highly prized aesthetically, there is literally zero difference healthwise or in terms of performance, because it’s nothing to do with the muscle, and is only about the fascia layout.
The density of muscle fibers is again purely genetic, but it only makes things easier or harder; this part’s not impossible for anyone.
The inclination to subcutaneous fat storage is by far the most modifiable factor, and the thus most readily overcome, if you feel so inclined. That doesn’t mean it will necessarily be easy! But it does mean that it’s relatively less difficult than the others.
How much does it matter for health, e.g. waist size etc?
As you may have gathered from the above, having a six-pack (or indeed a differently-numbered “pack”, if that be your genetic lot) makes no important difference to health:
- The fascia layout is completely irrelevant to health
- The muscle fiber types do make a difference to athletic performance, but not general health when at rest
- The subcutaneous fat storage is a health factor, but probably not how most people think
Healthy body fat percentages are (assuming normal hormones) in the range of 20–25% for women and 15–20% for men.
For most people, having clearly visible abs requires going below those healthy levels. For most people, that’s not optimally healthy. And those you see on magazine covers or in bodybuilding competitions are usually acutely dehydrated for the photo, which is of course not good. They will rehydrate after the shoot.
However, waist size (especially as a ratio, compared to hip size) is very important to health. This has less to do with subcutaneous fat, though, and is more to do with visceral belly fat, which goes under the muscles and thus does not obscure them:
Visceral Belly Fat & How To Lose It
One final note: fat notwithstanding, and aesthetics notwithstanding, having a strong core is very good for general health; it helps keeps one’s internal organs in place and well-protected, and improves stability, making falls less likely as we get older. Additionally, having muscle improves our metabolic base rate, which is good for our heart. Abs are just one part of core strength (the back being important too, for example), but should not be neglected.
Top-tier exercises to do include planks, and hanging leg raises (i.e. hang from some support, such as a chin-up bar, and raise your legs, which counterintuitively works your abs a lot more than your legs).
Take care!
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Gut-Healthy Labneh Orecchiette
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Labneh (a sort of yogurt-cheese made from strained yogurt) is a great probiotic, and there’s plenty of resistant starch in this dish too, from how we cook, cool, and reheat the pasta. Add to this the lycopene from the tomatoes, the ergothioneine from the mushrooms, and the healthful properties of the garlic, black pepper, and red chili, and we have a very healthy dish!
You will need
- 10 oz labneh (if you can’t buy it locally, you can make your own by straining Greek yogurt through a muslin cloth, suspended over a bowl to catch the water that drips out, overnight—and yes, plant-based is also fine if you are vegan, and the gut benefits are similar because unlike vegan cheese, vegan yogurt is still fermented)
- 6 oz wholegrain orecchiette (or other pasta, but this shape works well for this sauce)
- ¼ bulb garlic, grated
- Juice of ½ lemon
- Large handful chopped parsley
- Large handful chopped dill
- 9 oz cherry tomatoes, halved
- 9 oz mushrooms (your choice what kind), sliced (unless you went for shiitake or similar, which don’t need it due to already being very thin)
- 2 tsp black pepper, coarse ground
- 1 tsp red chili flakes
- ¼ tsp MSG or ½ tsp low-sodium salt
- Extra virgin olive oil
Method
(we suggest you read everything at least once before doing anything)
1) Cook the pasta as you normally would. Drain, and rinse with cold water. Set aside.
2) Combine the labneh with the garlic, black pepper, dill, parsley, and lemon juice, in a large bowl. Set aside.
3) Heat a little olive oil in a skillet; add the chili flakes, followed by the mushrooms. Cook until soft and browned, then add the tomatoes and fry for a further 1 minute—we want the tomatoes to be blistered, but not broken down. Stir in the MSG/salt, and take off the heat.
4) Refresh the pasta by passing a kettle of boiling water through it in a colander, then add the hot pasta to the bowl of labneh sauce, stirring to coat thoroughly.
5) Serve, spooning the mushrooms and tomatoes over the labneh pasta.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Making Friends With Your Gut (You Can Thank Us Later)
- Lycopene’s Benefits For The Gut, Heart, Brain, & More
- “The Longevity Vitamin” (That’s Not A Vitamin)
Take care!
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Plant vs Animal Protein
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Plant vs Animal Protein: Head to Head
Some people will obviously have strong ideological opinions here—for vegetarians and vegans, it’s no question, and for meat-eaters, it’s easy to be reactive to that and double-down on the bacon. But, we’re a health and productivity newsletter, so we’ll be sticking to the science.
Which is better, healthwise?
First, it depends how you go about it. Consider these options:
- A piece of salmon
- A steak
- A hot dog
- A hot dog, but plant-based
- Textured soy protein (no additives)
- Edamame (young soy) beans
Three animal-based protein sources, three plant-based. We could render the competition simple (but very unfair) by pitting the hotdog against the edamame beans, or the plant-based hot dog against the piece of salmon. So let’s kick this off by saying:
- There are good and bad animal-based protein sources
- There are good and bad plant-based protein sources
Whatever you choose, keep that in mind while you do. Less processed is better in either case. And if you do go for red meat, less is better, period.
Picking the healthiest from each, how do the nutritional profiles look?
They look good in both cases! One factor of importance is that in either case, our bodies will reduce the proteins we consume to their constituent amino acids, and then rebuild them into the specific proteins we actually need. Our bodies will do that regardless of the source, because we are neither a salmon nor a soy bean, for example.
We need 20 specific amino acids, for our bodies to make the proteins we will use in our bodies.
Animal protein sources contain all 20 of those. Plant based sources often don’t, individually, but by eating soy for example (which does contain all 20) and/or getting multiple sources of protein from different plants, the 20 can be covered quite easily with little thought, just by having a varied diet.
Meats are #1!
- They’re number 1 for nutritional density
- They’re number 1 for health risks, too
So while plant-based diet adherents may need to consume more varied things to get all the nutrients necessary, meat-eaters won’t have that problem.
Meat-eaters will instead have a different problem, of more diet-related health risks, e.g.
- Cardiovascular disease
- Metabolic disorders
- Cancers
So again, if eating (especially processed and/or red) meat, moderation is good. The Mediterranean Diet that we so often recommend, by default contains small amounts of lean animal protein.
Which is better for building muscle?
Assuming a broadly healthy balanced diet, and getting sufficient protein from your chosen source, they’re pretty equal:
- Vegan and Omnivorous High Protein Diets Support Comparable Daily Myofibrillar Protein Synthesis Rates and Skeletal Muscle Hypertrophy in Young Adults
- A mycoprotein-based high-protein vegan diet supports equivalent daily myofibrillar protein synthesis rates compared with an isonitrogenous omnivorous diet in older adults: a randomised controlled trial
(both studies showed that both dietary approaches yielded results that showed no difference in muscle synthesis between the two)
The bottom line is…
Healthwise, what’s more important than whether you get your protein from animals or plants is that you eat foods that aren’t processed, and are varied.
And if you want to do a suped-up Mediterranean Diet with less red meat, you might want to try:
A Pesco-Mediterranean Diet With Intermittent Fasting: JACC Review Topic of the Week
^This is from a review in the Journal of the American College of Cardiology, and in few words, they recommend it very highly
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Mimosa For Healing Your Body & Mind
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Today we’re looking at mimosa (no relation to the cocktail!), which is a name given to several related plant species that belong to the same genus or general clade, look similar, and have similar properties and behavior.
As a point of interest that’s not useful: mimosa is one of those plants whereby if you touch it, it’ll retract its leaves and shrink away from you. The leaves also droop at nighttime (perfectly healthily; they’re not wilting or anything; this too is just plant movement), and spring back up in the daytime.
So that’s what we mean when we say “and behavior” 😉
Antidepressant & anxiolytic
Mimosa bark and leaves have long been used in Traditional Chinese Medicine, as well as (albeit different species) in the North-East of Brazil, and (again, sometimes different species) in Mexico.
Animal studies, in vivo studies, and clinical practice in humans, have found this to be effective, for example:
❝[Mimosa pudica extract] has anti-anxiety, anti-depressant and memory enhancing activities that are mediated through multiple mechanisms❞
Source: Effects of Mimosa pudica L. leaves extract on anxiety, depression and memory
Research is ongoing with regard to how, exactly, mimosa does what it does. Here’s a paper about another species mimosa:
(notwithstanding the genus name, it’s still part of the mimosa clade)
Anti-inflammatory & analgesic
In this case, mimosa has traditionally been used as a topical tincture (for skin damage of many kinds, ranging from cuts and abrasions to burns to autoimmune conditions and more), so what does the science say about that?
❝In summary, the present study provided evidence that the [mimosa extract], its fractions and the isolated compound sakuranetin showed significant anti-inflammatory and antinociceptive activities❞
Wound healing
About those various skin damages, here’s another application, and a study showing that it doesn’t just make it feel better, it actually helps it to heal, too:
❝Therapeutic effectiveness occurred in all patients of the extract group; after the 8th treatment week, ulcer size was reduced by 92% as mean value in this group, whereas therapeutic effectiveness was observed only in one patient of the control group (chi(2), p=0.0001). No side effects were observed in any patient in either group.❞
Very compelling stats!
Read more: Therapeutic effectiveness of a Mimosa tenuiflora cortex extract in venous leg ulceration treatment
Is it safe?
Yes, for most people, with some caveats:
- this one comes with a clear “don’t take if pregnant or breastfeeding” warning, as for unknown reasons it has caused a high incidence of fetal abnormalities or fetal death in animal studies.
- while the stem bark (the kind used in most mimosa supplements and most readily found online) has negligible psychoactivity, as do many species of mimosa in general, the root of M. tenuiflora has psychedelic effects similar to ayahuasca if taken orally, for example as a decoction, if in the presence of a monoamine oxidase inhibitor (MAOI), as otherwise MAO would metabolize the psychoactive component in the gut before it can enter the bloodstream.
That’s several “ifs”, meaning that the chances of unwanted psychedelic effects are slim if you’re paying attention, but as ever, do check with your doctor/pharmacist to be sure.
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
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