Want to sleep longer? Adding mini-bursts of exercise to your evening routine can help – new study

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Exercising before bed has long been discouraged as the body doesn’t have time to wind down before the lights go out.

But new research has found breaking up a quiet, sedentary evening of watching television with short bursts of resistance exercise can lead to longer periods of sleep.

Adults spend almost one third of the 24-hour day sleeping. But the quality and length of sleep can affect long-term health. Sleeping too little or waking often in the night is associated with an increased risk of heart disease and diabetes.

Physical activity during the day can help improve sleep. However, current recommendations discourage intense exercise before going to bed as it can increase a person’s heart rate and core temperature, which can ultimately disrupt sleep.

Nighttime habits

For many, the longest period of uninterrupted sitting happens at home in the evening. People also usually consume their largest meal during this time (or snack throughout the evening).

Insulin (the hormone that helps to remove sugar from the blood stream) tends to be at a lower level in the evening than in the morning.

Together these factors promote elevated blood sugar levels, which over the long term can be bad for a person’s health.

Our previous research found interrupting evening sitting every 30 minutes with three minutes of resistance exercise reduces the amount of sugar in the bloodstream after eating a meal.

But because sleep guidelines currently discourage exercising in the hours before going to sleep, we wanted to know if frequently performing these short bursts of light activity in the evening would affect sleep.

Activity breaks for better sleep

In our latest research, we asked 30 adults to complete two sessions based in a laboratory.

During one session the adults sat continuously for a four-hour period while watching streaming services. During the other session, they interrupted sitting by performing three minutes of body-weight resistance exercises (squats, calf raises and hip extensions) every 30 minutes.

After these sessions, participants went home to their normal life routines. Their sleep that evening was measured using a wrist monitor.

Our research found the quality of sleep (measured by how many times they woke in the night and the length of these awakenings) was the same after the two sessions. But the night after the participants did the exercise “activity breaks” they slept for almost 30 minutes longer.

Identifying the biological reasons for the extended sleep in our study requires further research.

But regardless of the reason, if activity breaks can extend sleep duration, then getting up and moving at regular intervals in the evening is likely to have clear health benefits.

Time to revisit guidelines

These results add to earlier work suggesting current sleep guidelines, which discourage evening exercise before bed, may need to be reviewed.

As the activity breaks were performed in a highly controlled laboratory environment, future research should explore how activity breaks performed in real life affect peoples sleep.

We selected simple, body-weight exercises to use in this study as they don’t require people to interrupt the show they may be watching, and don’t require a large space or equipment.

If people wanted to incorporate activity breaks in their own evening routines, they could probably get the same benefit from other types of exercise. For example, marching on the spot, walking up and down stairs, or even dancing in the living room.

The key is to frequently interrupt evening sitting time, with a little bit of whole-body movement at regular intervals.

In the long run, performing activity breaks may improve health by improving sleep and post-meal blood sugar levels. The most important thing is to get up frequently and move the body, in a way the works best for a person’s individual household.

Jennifer Gale, PhD candidate, Department of Human Nutrition, University of Otago and Meredith Peddie, Senior Lecturer, Department of Human Nutrition, University of Otago

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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    Dive into the alkaline diet’s claims vs. science on diabetes, osteoporosis, and the actual impact of acidic foods on your health.

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  • Heart attack or panic attack? Why young men are calling ambulances for unmanaged anxiety

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    Anxiety affects one in five Australian men at some point in their lives. But the condition remains highly stigmatised, misunderstood and under-diagnosed.

    Men are around half as likely to be diagnosed with an anxiety disorder compared to women. Some feel pressure to be fearless and hide their emotions. Others simply don’t understand or have the language to describe anxiety symptoms.

    This has serious consequences. Our latest research shows young men are turning to ambulance services when their symptoms become overwhelming – some even think they’re having a heart attack.

    So why do so many men wait until they need to call emergency services, rather than seek support earlier from a GP or psychologist? And what prompts them to call? We reviewed the paramedic notes of 694 men aged 15 to 25 years in Victoria, Australia, to find out.

    PeopleImages.com – Yuri A/Shutterstock

    Young men haven’t seen others asking for help

    Boys are raised to value courage, strength and self-assurance, and to suppress vulnerability.

    When parents encourage boys to “face their fears”, rather than offering emotional comfort and tenderness, anxiety gets positioned in conflict with masculinity. This leads to a disjuncture between the support young men are met with (and come to expect) from others, and the support they may want or need.

    This also means boys grow up believing their male role models – dads, brothers, grandads, coaches – don’t get anxious, deterring boys and men from seeking help. As a result, anxiety goes undiagnosed and opportunities for early intervention are missed.

    Recently, we have seen positive shifts challenging restrictive masculine stereotypes. This has improved awareness surrounding men’s depression – opening up conversations, normalising help-seeking and leading to the development of men’s mental health programs and resources.

    However, men’s anxiety remains in the shadows. When anxiety is talked about, it’s not with the same weight or concern as depression. This is despite men’s anxiety having harmful health impacts including turning to alcohol and drugs to cope, and increasing the risk of male suicide.

    What does anxiety look like?

    When men are encouraged to talk about anxiety, they describe various challenges including repetitive worries, feeling out-of-control and intense physical symptoms. This includes a high heart rate, shortness of breath, body pains, tremors and headaches.

    Jack Steele, a prominent Australian personality and one half of the Inspired Unemployed, opened up about his anxiety difficulties on The Imperfects Podcast last year saying:

    I didn’t know what anxiety was. I thought I was the opposite of anxiety.

    The way I explain it, it’s like […] your whole body just shuts down. My throat starts closing up and my whole body just goes numb. […] It feels like you’re just so alone. You feel like no-one can help you.

    You genuinely think the world’s ending – like there’s no out.

    https://youtube.com/watch?v=0mkgUAyhY_o%3Fwmode%3Dtransparent%26start%3D0

    These physical symptoms are common in men but can be frequently dismissed rather than recognised as anxiety. Our research has found that, when left unaddressed, these symptoms typically worsen and arise in more and more contexts.

    Why do anxious men call ambulances?

    Our new study investigated the consequences of men’s anxiety going unaddressed.

    First, we used data from the National Ambulance Surveillance System to identify and describe the types of anxiety young men experience. We then looked at the characteristics and contexts of young men’s anxiety presentations to ambulance services.

    Overwhelmed and lacking support, many young men turn to ambulances in crisis. Anxiety now accounts for 10% of male ambulance attendances for mental health concerns, surpassing depression and psychosis.

    Ambulance on a Melbourne street
    One in ten ambulance callouts for mental illness among men is for anxiety. Benjamin Crone/Shutterstock

    While every presentation is different, our study identified three common presentations among young men:

    1. Sudden onset of intense bodily symptoms resembling life-threatening physical health conditions such as heart attacks.

    Twenty-two-year-old Joshua, for example, whose case files we reviewed as part of our study, was on a tram home from work when he experienced sudden numbness in his hands and feet. A bystander saw he was having muscle spasms in his hands. Joshua was alert but extremely anxious and asked the bystander for help.

    2. Severe anxiety triggered or worsened by substance use.

    Adam, a 21-year-old man, consumed a substantial amount of diazepam (Valium) while driving home, after having an anxiety attack at work. Adam reached out to paramedics because he was concerned his anxiety symptoms hadn’t dissipated, and was worried he may have taken too much diazepam.

    3. Mental health deterioration with self-harm or suicidal thoughts, often tied to situational stressors such as unstable housing, unemployment, financial difficulties and relationship strain.

    Leo, aged 25, had been increasingly anxious for the past three days. Leo’s parents called an ambulance after he told them he wanted to kill himself. Leo told paramedics on arrival that he still felt suicidal and had been getting worse over the past three months.

    Directing resources where they’re needed

    Young men’s anxiety presentations are time- and resource-intensive for paramedics, many of whom feel poorly equipped to respond effectively. After ruling out physical causes, paramedic support is typically limited to reassurance and breathing techniques.

    Most young men are then instructed to follow up with GPs, psychologists or other health professionals in the general community.

    But taking that next step involves overcoming the stigma associated with help-seeking, the shame of having called an ambulance and deep tensions between anxiety and what it means to be a man.

    This means many young men slip through the cracks. And without ongoing mental health support, they face high risks of presenting again to emergency services with increasingly severe mental health symptoms.

    To address this, we need to:

    • ramp up conversations about men’s anxiety and take their experiences seriously
    • develop an awareness campaign about men’s anxiety. Awareness campaigns have successfully dismantled stigma and shed light on men’s depression and suicide
    • improve diagnosis of men’s anxiety disorders by up-skilling and training clinicians to detect anxiety and the unique and distinct constellations of symptoms in men
    • create accessible pathways to early support through digital psychological education resources, focused on improving awareness and literacy surrounding men’s anxiety experiences.

    If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.

    Krista Fisher, Research Fellow, Centre for Youth Mental Health, The University of Melbourne; Dan Lubman, Executive Clinical Director, Turning Point & Director of Monash Addiction Research Centre, Monash University; Simon Rice, Associate Professor & Clinical Psychologist, Mental Health in Elite Sports, The University of Melbourne, and Zac Seidler, Associate Professor, Centre for Youth Mental Health, The University of Melbourne

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • Kiwi vs Lychee – Which is Healthier?

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    Our Verdict

    When comparing kiwi to lychees, we picked the lychees.

    Why?

    It wasn’t close:

    In terms of macros, kiwi has more than 2x the fiber as well as more protein, while lychees have more carbs; an easy first-round win for kiwi.

    In the category of vitamins, kiwi has more of vitamins A, B1, B5, B7, B9, C, E, and K, while lychees have more of vitamins B2, B3, and B6, yielding an 8:3 win to kiwi, even before we take into account the huge margins of difference for vitamins E and K, both heavily in kiwi’s favor.

    Looking at minerals, kiwi has more calcium, magnesium, manganese, phosphorus, potassium, and zinc, while lychees have more copper and selenium, giving kiwi a 6:2 win here.

    In other considerations, kiwi has some cancer-killing properties that lychees can’t boast, so that’s another point in their favor.

    Adding up the sections makes for a clear overall win for kiwi, but by all means do enjoy either or both, as diversity is best!

    Want to learn more?

    You might like:

    Top 8 Fruits That Prevent & Kill Cancer ← kiwi is number one on the list!

    Enjoy!

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  • Yoga For Over-50s: The Risks Nobody Mentions

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    Will Harlow, the over-50s specialist physio, has two warnings:

    Watch out for…

    Yoga indeed improves flexibility, mobility, and wellbeing, but it may present specific risks for people over 50 if not balanced with strength training. This is because increasing flexibility without also improving strength can reduce joint control and increase injury risk, especially in people who are already flexible or hypermobile.

    Which last part is important to understand, as it’s a little counterintuitive.

    To this end, he does recommend some exercises:

    • Romanian deadlift: strengthens hamstrings to counterbalance the frequent hamstring stretches in yoga.
    • Eccentric goblet squat: targets quads, glutes, and back stability, protecting lower body joints.
    • Curl, twist, and press: builds upper-body strength and shoulder stability, making dislocations and similar a lot less likely.

    One other potential problem is that while some people start yoga to relieve pain, certain movements can aggravate conditions like labral tears or joint damage, ultimately worsening the pain rather than alleviating it.

    Because of this, he advises that yoga genuinely is excellent for the health, if combined with strength training. He also advises that it’s not a cure-all, and that we should address underlying injuries first (such as: with a physio) and avoid pushing through pain.

    For more on this plus visual demonstrations of the exercises, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like:

    Yoga Therapy for Arthritis – by Dr. Steffany Moonaz & Erin Byron ← the first-listed author’s PhD in public health was the result of 8 years of study developing an evidence-based yoga program for people with arthritis

    Take care!

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  • The Most Dangerous Ingredients That Aren’t In Your Vape Device (Until You Use It)

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    “No, officer, there are no explosives in this house” says the bomb-maker, truthfully, on account of keeping the ingredients in separate containers to be combined later.

    In a similar vein, there are two very toxic substances that aren’t in vapes, and so don’t need to go on any labels, but get created inside the vape once heated.

    And them, the newly-created chemicals, that weren’t there when you bought it, go into your lungs.

    Spoiler: what they do there is not good

    The last place you want a chemical factory to be is in front of your face

    In few words: heating the main ingredient in most e-cigarette fluids—propylene glycol—creates two toxic chemicals, methylglyoxal and acetaldehyde, which are very harmful to human lung cells.

    Both of these latter two chemicals disrupt key cell functions, but of the two methylglyoxal is the most damaging even at lower concentrations; it impairs mitochondria (famously: the cell’s energy-givers) and weakens the actin cytoskeleton, compromising cell shape and stability.

    In case “the actin cytoskeleton” sounds like something that might be encountered as a monster in a Dungeons & Dragons game, we’ll take a moment to clarify:

    • actin = a specialized kind of protein
    • cyto = of or relating to cells
    • skeleton = the most dry part that gives structure to the wetter parts

    So, “actin cytoskeleton” = the relatively tougher protein structure that helps a cell to stay the shape it’s supposed to be

    …until methylglyoxal comes along and starts breaking it down, that is.

    And it’s worth bearing in mind also that lower-powered e-cigarettes—which many users assume are safer—usually generate higher levels of methylglyoxal.

    Here’s the paper itself: Acetaldehyde and methylglyoxal: comparative analysis of toxic electronic cigarette degradation products in 3D and 2D exposure systems using human bronchial epithelial models

    And here’s a pop-science article about it, that’s lighter reading than the paper, while also having a little more background information: Hidden toxins in vapes can harm lung cells

    There are also other “bonus chemicals” from disposable vapes specifically, insofar as the chemicals you will inhale were (again) not included as ingredients, and in this case, they came from the heating element itself:

    ❝To place the potential for Pb exposure in the context of traditional cigarettes, Figure 3B compares the mass of Pb in a pack of traditional cigarettes (20 cigarettes) to the mass of Pb of a comparable nicotine dose from the Esco Bar devices.

    In comparison to the highest Pb delivery measured for traditional cigarettes, on average Esco Bar devices (Flavored and Clear) emitted ∼4 to 13 times more Pb (4.9 and 15.4 μg, respectively) in the first 200 puffs than the highest reported for a pack of cigarettes (20 cigarettes; 1.2 μg).

    For context, this level of Pb exposure is equivalent to smoking as many as 19 packs of cigarettes in a single day.❞

    Pb = lead, as in the heavy metal of that name

    Read in full: Guess How Much Lead Is Released By Disposable Vapes

    Of course, even the base ingredients aren’t great either

    While they indeed become much worse once turned into methylglyoxal and acetaldehyde, even the raw ingredients are Not Good™, for example:

    So, the substrate itself can cause irritation, and flavorings (with cinnamaldehyde, the cinnamon flavoring, being one of the worst) can really mess with our body’s inflammatory and oxidative responses.

    You can read more about this in our main feature on vaping, here:

    Vaping: A Lot Of Hot Air? ← this also looks at which is worst, out of vaping and smoking (both are very bad, but can you guess which is relatively worst?)

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  • 52 Ways to Walk – by Annabel Streets

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    Most of us learned to walk at a very young age and probably haven’t thought much about it since, except perhaps in a case where some injury made it difficult.

    Annabel Streets provides a wonderful guide to not just taking up (or perhaps reclaiming) the joy of walking, but also the science of it in more aspects than most of us have considered:

    • The physical mechanics of walking—what’s best?
    • Boots or shoes? Barefoot?
    • Roads, grass, rougher vegetation… Mud?
    • Flora & fauna down to the microbiota that affect us
    • How much walking is needed, to be healthy?
    • Is there such a thing as too much walking?
    • What are the health benefits (or risks) of various kinds of weather?
    • Is it better to walk quickly or to walk far?
    • What about if we’re carrying some injury?
    • What’s going on physiologically when we walk?
    • And so much more…

    Streets writes with a captivating blend of poetic joie-de-vivre coupled with scientific references.

    One moment the book is talking about neuroradiology reports of NO-levels in our blood, the impact of Mycobacterium vaccae, and the studied relationship between daily steps taken and production of oligosaccharide 3′-sialyllactose,

    and the next it’s all:

    “As if the newfound lightness in our limbs has crept into our minds, loosening our everyday cares and constraints…”

    And all in all, this book helps remind us that sometimes, science and a sense of wonder can and do (and should!) walk hand-in-hand.

    Treat yourself to “52 Ways to Walk” from Amazon today!

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  • Hardwiring Happiness – by Dr. Rick Hanson

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    Publishers are very excitable about “the new science of…”, and it’s almost never actually a new science of. But what about in this case?

    No, it isn’t. It’s the very well established science of! And that’s a good thing, because it means this book is able to draw on quite a lot of research and established understanding of how neuroplasticity works, to leverage that and provide useful guidance.

    A particular strength of this book is that while it polarizes the idea that some people have “happy amygdalae” and some people have “sad amygdalae”, it acknowledges that it’s not just a fated disposition and is rather the result of the lives people have led… And then provides advice on upgrading from sad to happy, based on the assumption that the reader is quite possibly coming from a non-ideal starting point.

    The bookdoes an excellent job of straddling neuroscience and psychology, which sounds like not much of a straddle (the two are surely very connected, after all, right?) but this does mean that we’re hearing about the chemical structure of DNA inside the nuclei of the neurons of the insula, not long after reading an extended gardening metaphor about growth, choices, and vulnerabilities.

    Bottom line: if you’d like a guide to changing your brain for the better (happier) that’s not just “ask yourself: what if it goes well?” and similar CBTisms, then this is a fine book for you.

    Click here to check out Hardwiring Happiness, and indeed hardwire happiness!

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