I’ve been sick. When can I start exercising again?
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You’ve had a cold or the flu and your symptoms have begun to subside. Your nose has stopped dripping, your cough is clearing and your head and muscles no longer ache.
You’re ready to get off the couch. But is it too early to go for a run? Here’s what to consider when getting back to exercising after illness.
Exercise can boost your immune system – but not always
Exercise reduces the chance of getting respiratory infections by increasing your immune function and the ability to fight off viruses.
However, an acute bout of endurance exercise may temporarily increase your susceptibility to upper respiratory infections, such as colds and the flu, via the short-term suppression of your immune system. This is known as the “open window” theory.
A study from 2010 examined changes in trained cyclists’ immune systems up to eight hours after two-hour high-intensity cycling. It found important immune functions were suppressed, resulting in an increased rate of upper respiratory infections after the intense endurance exercise.
So, we have to be more careful after performing harder exercises than normal.
Can you exercise when you’re sick?
This depends on the severity of your symptoms and the intensity of exercise.
Mild to moderate exercise (reducing the intensity and length of workout) may be OK if your symptoms are a runny nose, nasal congestion, sneezing and minor sore throat, without a fever.
Exercise may help you feel better by opening your nasal passages and temporarily relieving nasal congestion.
However, if you try to exercise at your normal intensity when you are sick, you risk injury or more serious illness. So it’s important to listen to your body.
If your symptoms include chest congestion, a cough, upset stomach, fever, fatigue or widespread muscle aches, avoid exercising. Exercising when you have these symptoms may worsen the symptoms and prolong the recovery time.
If you’ve had the flu or another respiratory illness that caused a high fever, make sure your temperature is back to normal before getting back to exercise. Exercising raises your body temperature, so if you already have a fever, your temperature will become high quicker, which makes you sicker.
If you have COVID or other contagious illnesses, stay at home, rest and isolate yourself from others.
When you’re sick and feel weak, don’t force yourself to exercise. Focus instead on getting plenty of rest. This may actually shorten the time it takes to recover and resume your normal workout routine.
I’ve been sick for a few weeks. What has happened to my strength and fitness?
You may think taking two weeks off from training is disastrous, and worry you’ll lose the gains you’ve made in your previous workouts. But it could be just what the body needs.
It’s true that almost all training benefits are reversible to some degree. This means the physical fitness that you have built up over time can be lost without regular exercise.
To study the effects of de-training on our body functions, researchers have undertaken “bed rest” studies, where healthy volunteers spend up to 70 days in bed. They found that V̇O₂max (the maximum amount of oxygen a person can use during maximal exercise, which is a measure of aerobic fitness) declines 0.3–0.4% a day. And the higher pre-bed-rest V̇O₂max levels, the larger the declines.
In terms of skeletal muscles, upper thigh muscles become smaller by 2% after five days of bed rest, 5% at 14 days, and 12% at 35 days of bed rest.
Muscle strength declines more than muscle mass: knee extensor muscle strength gets weaker by 8% at five days, 12% at 14 days and more than 20% after around 35 days of bed rest.
This is why it feels harder to do the same exercises after resting for even five days.
But in bed rest studies, physical activities are strictly limited, and even standing up from a bed is prohibited during the whole length of a study. When we’re sick in bed, we have some physical activities such as sitting on a bed, standing up and walking to the toilet. These activities could reduce the rate of decreases in our physical functions compared with study participants.
How to ease back into exercise
Start with a lower-intensity workout initially, such as going for a walk instead of a run. Your first workout back should be light so you don’t get out of breath. Go low (intensity) and go slow.
Gradually increase the volume and intensity to the previous level. It may take the same number of days or weeks you rested to get back to where you were. If you were absent from an exercise routine for two weeks, for example, it may require two weeks for your fitness to return to the same level.
If you feel exhausted after exercising, take an extra day off before working out again. A day or two off from exercising shouldn’t affect your performance very much.
Ken Nosaka, Professor of Exercise and Sports Science, Edith Cowan University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Age & Aging: What Can (And Can’t) We Do About It?
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How old do you want to be?
We asked you how old you are, and got an interesting spread of answers. This wasn’t too surprising; of course we have a general idea of who our readership is and we write accordingly.
What’s interesting is the gap for “40s”.
And, this wasn’t the case of a broken poll button, it’s something that crops up a lot in health-related sociological research. People who are most interested in taking extra care of their body are often:
- Younger people full of optimism about maintaining this perfectly healthy body forever
- Older people realizing “if I don’t want to suffer avoidable parts of age-related decline, now is the time to address these things”
In between, we often have a gap whereby people no longer have the optimism of youth, but do not yet feel the pressure of older age.
Which is not to say there aren’t 40-somethings who do care! Indeed, we know for a fact we have some subscribers in their 40s (and some in their 90s, too), just, they evidently didn’t vote in this poll.
Anyway, let’s bust some myths…
Aging is inevitable: True or False?
False, probably. That seems like a bold (and fortune-telling) claim, so let’s flip it to deconstruct it more logically:
Aging is, and always will be, unstoppable: True or False?
That has to be “False, probably”. To say “true” now sounds like an even bolder claim. Just like “the moon will always be out of reach”.
- When CPR was first developed, first-aiders were arrested for “interfering with a corpse”.
- Many diseases used to be death sentences that are now “take one of these in the morning”
- If you think this is an appeal to distant history, HIV+ status was a death sentence in the 90s. Now it’s “take one of these in the morning”.
But, this is an appeal to the past, and that’s not always a guarantee of the future. Where does the science stand currently? How is the research and development doing on slowing, halting, reversing aging?
We can slow aging: True or False?
True! There’s a difference between chronological age (i.e., how much time has passed while we’ve been alive) and biological age (i.e., what our diverse markers of aging look like).
Biological age often gets talked about as a simplified number, but it’s more complex than that, as we can age in different ways at different rates, for example:
- Visual markers of aging (e.g. wrinkles, graying hair)
- Performative markers of aging (e.g. mobility tests)
- Internal functional markers of aging (e.g. tests for cognitive decline, eyesight, hearing, etc)
- Cellular markers or aging (e.g. telomere length)
- …and more, but we only have so much room here
There are things we can do to slow most of those, including:
- Good nutrition (e.g. collagen and lutein, to keep specific parts of the body functioning “like those of a younger person” ranging from the joints to the eyes and brain)
- Anti-oxidant activity (e.g. eating anti-oxidant foods, supplementing with anti-oxidants or other things that mitigate oxidative stress, and avoiding foods that hasten oxidative stress which causes many kinds of aging)
- Getting good sleep (not to be underestimated for its restorative importance)
- Taking care of our cognitive health
- Taking care of our mental health (especially: reducing stress)
- Taking care of our mobility (prevention is better than cure!)
In the case of cognitive decline particularly, check out our previous article:
How To Reduce Your Alzheimer’s Risk
It’s too early to worry about… / It’s too late to do anything about… True or False?
False and False!
Many things that affect our health later in life are based on early-life choices and events. So it’s important for young people to take advantage of that. The earlier one adopts a healthy lifestyle, the better, because, and hold onto your hats for the shocker here: aging is cumulative.
However, that doesn’t mean that taking up healthy practices (or dropping unhealthy ones) is pointless later in life, even in one’s 70s and beyond!
Read about this and more from the National Institute of Aging:
What Do We Know About Healthy Aging?
We can halt aging: True or False?
False, for now at least. Our bodies are not statues; they are living organisms, constantly rebuilding themselves, constantly changing, every second of every day, for better or for worse. Every healthy or unhealthy choice you make, every beneficial or adverse experience you encounter, affects your body on a cellular level.
Your body never, ever, stops changing for as long as you live.
But…
We can reverse aging: True or False?
True! Contingently and with limitations, for now at least.
Remember what we said about your body constantly rebuilding itself? That goes for making itself better as well as making itself worse.
- If yesterday you couldn’t touch your toes and today you can, congratulations, you just got younger by a biological marker of aging.
- If you stopped drinking/smoking/eating a certain way last year, and this year your skin has fewer wrinkles, congratulations, you got younger by a biological marker of aging.
- If you’ve been exercising and now your heart rate variability and VO2 max are better than last month, congratulations, you got younger by a biological marker aging.
- If you took supplements that reduce and/or mitigate oxidative stress (e.g. resveratrol, CoQ10, l-theanine, etc), and you took up intermittent fasting, and now your telomeres are longer than they were six months ago, congratulations, you got younger by a biological marker of aging.
But those aren’t really being younger, we’ll still die when our time is up: True or False?
False and True, respectively.
Those kinds of things are really being younger, biologically. What else do you think being biologically younger is?
We may indeed die when our time is up, but (unless we suffer fatal accident or incident first) “when our time is up” is something that is decided mostly by the above factors.
Genetics—the closest thing we have to biological “fate”—accounts for only about 25% of our longevity-related health*.
Genes predispose, but they don’t predetermine.
*Read more: Human longevity: Genetics or Lifestyle? It takes two to tango
(from the Journal of Immunity and Ageing)
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One in twenty people has no sense of smell – here’s how they might get it back
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During the pandemic, a lost sense of smell was quickly identified as one of the key symptoms of COVID. Nearly four years later, one in five people in the UK is living with a decreased or distorted sense of smell, and one in twenty have anosmia – the total loss of the ability to perceive any odours at all. Smell training is one of the few treatment options for recovering a lost sense of smell – but can we make it more effective?
Smell training is a therapy that is recommended by experts for recovering a lost sense of smell. It is a simple process that involves sniffing a set of different odours – usually essential oils, or herbs and spices – every day.
The olfactory system has a unique ability to regenerate sensory neurons (nerve cells). So, just like physiotherapy where exercise helps to restore movement and function following an injury, repeated exposure to odours helps to recover the sense of smell following an infection, or other cause of smell loss (for example, traumatic head injury).
Several studies have demonstrated the effectiveness of smell training under laboratory conditions. But recent findings have suggested that the real-world results might be disappointing.
One reason for this is that smell training is a long-term therapy. It can take months before patients detect anything, and some people may not get any benefit at all.
In one study, researchers found that after three months of smell training, participation dropped to 88%, and further declined to 56% after six months. The reason given was that these people did not feel as though they noticed any improvement in their ability to smell.
Cross-modal associations
To remedy this, researchers are now investigating how smell training can be improved. One interesting idea is that information from our other senses, or “cross-modal associations”, can be applied to smell training to promote odour perception and improve the results.
Cross-modal associations are described as the tendency for sensory cues from different sensory systems to be matched. For example, brightness tends to be associated with loudness. Pitch is related to size. Colours are linked to temperature, and softness is matched with round shapes, while spiky shapes feel more rough. In previous studies, these associations have been shown to have a considerable influence on how sensory information is processed. Especially when it comes to olfaction.
Recent research has shown that the sense of smell is influenced by a combination of different sensory inputs – not just odours. Sensory cues such as colour, shape, and pitch are believed to play a role in the ability to correctly identify and name odours, and can influence perceptions of odour pleasantness and intensity.
In one study, participants were asked to complete a test that measured their ability to discriminate between different odours while they were presented with the colour red or yellow, an outline drawing of a strawberry or a lemon, or a combination of these colours and shapes. The results suggested that corresponding odour and colour associations (for example, the colour red and strawberry) were linked to increased olfactory performance compared with odours and colours that were not associated (for example, the colour yellow and strawberry).
People who associated strawberries with the colour red performed better on smell tests. GCapture/Shutterstock While projects focusing on harnessing these cross-modal associations to improve treatments for smell loss are underway, research has already started to deliver some promising results.
In a recent study that aimed to investigate whether the effects of smell training could be improved with the addition of cross-modal associations, participants watched a guidance video containing sounds that matched the odours that they were training with. The results suggest that cross-modal interactions plus smell training improved olfactory function compared to smell training alone.
The results reported in recent studies have been promising and offer new insights into the field of olfactory science. It is hoped that this will soon lead to the development of more effective treatment options for smell recovery.
In the meantime, smell training is one of the best things you can do for a lost sense of smell, so patients are encouraged to stick with it so that they give themselves the best chance at recovery.
Emily Spencer, PhD Candidate, Olfaction, Edinburgh Napier University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Omega-3 Mushroom Spaghetti
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The omega-3 is not the only healthy fat in here; we’re also going to have medium-chain triglycerides, as well as monounsaturates. Add in the ergothioneine from the mushrooms and a stack of polyphenols from, well, most of the ingredients, not to mention the fiber, and this comes together as a very healthy dish. There’s also about 64g protein in the entire recipe, so you do the math for how much that is per serving, depending on how big you want the servings to be.
You will need
- 1lb wholewheat spaghetti (or gluten-free equivalent, such as a legume-based pasta, if avoiding gluten/wheat)
- 12oz mushrooms, sliced (any non-poisonous edible variety)
- ½ cup coconut milk
- ½ onion, finely chopped
- ¼ cup chia seeds
- ¼ bulb garlic, minced (or more, if you like)
- 2 tbsp extra virgin olive oil
- 1 tbsp black pepper, coarse ground
- 1 tbsp lime juice
Method
(we suggest you read everything at least once before doing anything)
1) Cook the spaghetti according to packet instructions, or your own good sense, aiming for al dente. When it’s done, drain it, and lastly rinse it (with cold water), and set it aside.
2) Heat the olive oil in a skillet and add the onion, cooking for 5 minutes
3) Add the garlic, mushrooms, and black pepper, cooking for another 8 minutes.
4) Add the coconut milk, lime juice, and chia seeds, stirring well and cooking for a further two minutes
5) Reheat the spaghetti by passing boiling water through it in a colander (the time it spent cold was good for it; it lowered the glycemic index)
6) Serve, adding the mushroom sauce to the spaghetti:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- The Magic of Mushrooms: “The Longevity Vitamin” (That’s Not A Vitamin)
- The Many Health Benefits of Garlic
- Black Pepper’s Impressive Anti-Cancer Arsenal (And More)
- If You’re Not Taking Chia, You’re Missing Out
Take care!
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Limitless Expanded Edition – by Jim Kwik
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This is a little flashier in presentation than we usually go for here, but the content is actually very good. Indeed, we’ve featured Jim Kwik before, with different, but also good content—in that case, physical exercises that strengthen the brain.
This time, Kwik (interspersed with motivational speeches that you may or may not benefit from, but they are there) offers a step-by-step course in improving various metrics of cognitive ability. His methods were produced by trial and error, and now have been refined and enjoyed by man. If it sounds like a sales gimmick, it is a bit, but the good news is that everything you need to benefit is in the book; it’s not about upselling to a course or “advanced” books or whatnot.
The style is enthusiastically conversational, and instructions when given (which is often) are direct and clear.
Bottom line: one of the most critical abilities a brain can have is the ability to improve itself, so whatever level your various cognitive abilities are at right now, if you apply this book, you will almost certainly improve in one or more areas, which will make it worth the price of the book.
Click here to check out Limitless, and find out what you can do!
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When Doctors Make House Calls, Modern-Style!
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In Tuesday’s newsletter, we asked you foryour opinion of telehealth for primary care consultations*, and got the above-depicted, below-described, set of responses:
- About 46% said “It is no substitute for an in-person meeting with a doctor; let’s keep the human touch”
- About 29% said “It means less waiting and more accessibility, while avoiding transmission of diseases”
- And 25 % said “I find that the pros and cons of telehealth vs in-person balance out, so: no preference”
*We specified that by “primary care” we mean the initial consultation with a non-specialist doctor, before receiving treatment or being referred to a specialist. By “telehealth” we mean by videocall or phonecall.
So, what does the science say?
A quick note first
Because telehealth was barely a thing (statistically speaking) before the first stages of the COVID pandemic, compared to how it is now, most of the science for this is young, and a lot of the science simply hasn’t been done yet, and/or has not been published yet, because the process can take years.
Because of this, some studies we do have aren’t specifically about primary care, and are sometimes about specialists. We think this should not affect the results much, but it bears highlighting.
Nevertheless, we’ll do what we can with the science we have!
Telehealth is more accessible than in-person consultations: True or False?
True, for most people. For example…
❝Data was found from a variety of emergency and non-emergency departments of primary, secondary, and specialised healthcare.
Satisfaction was high among recipients of healthcare, scoring 9-10 on a scale of 0-10 or ranging from 73.3% to 100%.
Convenience was rated high in every specialty examined. Satisfaction of clinicians was high throughout the specialities despite connection failure and concerns about confidentiality of information.❞
whereas…
❝Nonetheless, studies reported perception of increased barriers to accessing care and inequalities for vulnerable patients especially in older people❞
~ Ibid.
Source: Satisfaction with telemedicine use during COVID-19 pandemic in the UK: a systematic review
Now, perception of those things does necessarily equate to an actual increased barrier, but it is reasonable that someone who thinks something is inaccessible will be less inclined to try to access it.
The quality of care provided via telehealth is as good as in-person: True or False?
True, ostensibly, with caveats. The caveats are:
- We’re going offreported patient satisfaction, not objective patient health outcomes (we found little* science as yet for the relative incidence of misdiagnosis, for example—which kind of thing will take time to be revealed).
- We’re also therefore speaking (as statistics do) for the significant majority of people. However, if we happen to be (statistically speaking) an insignificant minority, well, that just sucks for us personally.
*we did find some, but it wasn’t very helpful yet. For example:
An electronic trigger to detect telemedicine-related diagnostic errors
this one does look at the incidence of diagnostic errors, but provides no control group (i.e. otherwise-comparable in-person consultations) for comparison.
While most oft-considered demographic groups reported comparable patient satisfaction (per race, gender, and socioeconomic status, for example), there was one outlier variable, which was age (as we quoted from that first study above).
However!
Looking under the hood of these stats, it seems that age is not the real culprit, so much as technological illiteracy, which is heavily correlated with age:
❝Lower eHealth literacy is associated with more negative attitudes towards I/C technology in healthcare. This trend is consistent across diverse demographics and regions. ❞
Source: Meta-analysis: eHealth literacy and attitudes towards internet/computer technology
There are things that can be done at an in-person consultation that can’t be done by telehealth: True or False?
True, of course. It is incredibly rare that we will cite “common sense”, (as sometimes “common sense” is actually “common mistakes” and is simply and verifiably wrong), but in this case, as one 10almonds subscriber put it:
❝The doctor uses his five senses to assess. This cannot be attained over the phone❞
~ 10almonds subscriber
A quick note first: if your doctor is using their sense of taste to diagnose you, please get a different doctor, because they should definitely not be doing that!
Not in this century, anyway… Once upon a time, diabetes was diagnosed by urine-tasting (and yes, that was a fairly reliable method).
However, nowadays indeed a doctor will use sight, sound, touch, and sometimes even smell.
In a videocall we’re down to two of those senses (sight and sound), and in a phonecall, down to one (sound) and even that is hampered. Your doctor cannot, for example, use a stethoscope over the phone.
With this in mind, it really comes down to what you need from your doctor in that consultation.
- If you’re 99% sure that what you need is to be prescribed an antidepressant, that probably doesn’t need a full physical.
- If you’re 99% sure that what you need is a referral, chances are that’ll be fine by telehealth too.
- If your doctor is 99% sure that what you need is a verbal check-up (e.g. “How’s it been going for you, with the medication that I prescribed for you a month ago?”, then again, a call is probably fine.
If you have a worrying lump, or an unhappy bodily discharge, or an unexplained mysterious pain? These things, more likely an in-person check-up is in order.
Take care!
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The Truth About Chocolate & Skin Health
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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
❝What’s the science on chocolate and acne? Asking for a family member❞
The science is: these two things are broadly unrelated to each other.
There was a very illustrative study done specifically for this, though!
❝65 subjects with moderate acne ate either a bar containing ten times the amount of chocolate in a typical bar, or an identical-appearing bar which contained no chocolate. Counting of all the lesions on one side of the face before and after each ingestion period indicated no difference between the bars.
Five normal subjects ingested two enriched chocolate bars daily for one month; this represented a daily addition of the diet of 1,200 calories, of which about half was vegetable fat. This excessive intake of chocolate and fat did not alter the composition or output of sebum.
A review of studies purporting to show that diets high in carbohydrate or fat stimulate sebaceous secretion and adversely affect acne vulgaris indicates that these claims are unproved.❞
Source: Effect of Chocolate on Acne Vulgaris
As for what might help against acne more than needlessly abstaining from chocolate:
Why Do We Have Pores, And Could We Not?
…as well as:
Of Brains & Breakouts: The Neuroscience Of Your Skin
And here are some other articles that might interest you about chocolate:
- Chocolate & Health: Fact or Fiction?
- The “Love Drug”: Get PEA-Brained!
- Enjoy Bitter Foods For Your Heart & Brain
Enjoy! And while we have your attention… Would you like this section to be bigger? If so, send us more questions!
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