How To Do HIIT (Without Wrecking Your Body)
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How To Do HIIT (Without Wrecking Your Body)
High-Intensity Interval Training, henceforth “HIIT”, is a well-researched and well-evidenced approach to exercise that gives powerful health benefits.
Specifically, health benefits that we don’t get from moderate exercise (as important as that is too) or endurance training.
Super-quick overview of the benefits first:
- Burns more calories than other forms of exercise
- Boosts your metabolic rate for hours afterwards
- …which means it actually works* for fat loss
- Reduces blood pressure (unless already healthy)
- Can promote muscle growth (depends on other factors)
*remember that most forms of exercise aren’t very good for fat loss, because our metabolism will slow afterwards to compensate. So HIIT flipping this one is quite a big deal.
What actually is it?
HIIT means exercise sessions in which one alternates between high intensity “maximum effort” bursts, and short recovery periods during which more moderate exercise is performed.
An example for runners could be switching between sprinting or jogging, changing mode each time one passes a street light.
❝A total of only two minutes of sprint interval exercise was sufficient to elicit similar responses as 30 minutes of continuous moderate intensity aerobic exercise❞
What did you mean about not wrecking your body? Is that… Likely?
Hopefully not, but it’s a barrier to some! We are not all twenty-something college athletes, after all, and our bodies aren’t always as durable as they used to be.
HIIT relies on intense exercise and short recovery periods, but what if our bodies are not accustomed to intense exercise, and need longer recovery periods? Can we still get the same benefits?
The trick is not to change the intensity or the recovery periods, but the exercise itself.
For HIIT to work the “intense” part has to be best-effort or approaching such. That part’s not negotiable. The recovery periods can be stretched a bit if you need to, but with the right tweaks, you ideally won’t have to do that.
Great! How?
First, note that you can do resistance interval training without impact. For example, if you crank up the resistance on an exercise bike or similar machine, you will be doing resistance training along with your cardio, and you’ll be doing it without the impact on your joints that you would if out pounding the pavement on foot.
(Running is fine if your body is used to it, but please don’t make HIIT your first running exercise in a decade)
Second, consider your environment. That exercise bike? You can get off it any time and you’re already at home (or perhaps your gym, with your car outside). Not so if you took up mountain biking or road racing.
Third, go for what is gentle in motion, even if it’s not resistance work per se. Swimming is a fabulous option for most people, and can absolutely be done with HIIT principles. Since vision is often obscured while swimming, counting strokes can be a good way to do HIIT. For example, ten strokes max effort, ten strokes normal, repeat. Do make sure you are aware of where the end of the pool is, though!
Fourth, make it fun! Ok, this one’s not about the safety quite so much, but it is about sustainability, and that’s critical for practical purposes too. You will only continue an exercise routine that you enjoy, after all.
- Could you curate a musical playlist that shifts tempo to cue your exercise mode intervals?
- Could you train with an exercise partner? Extra fun if this has a “relay race” feel to it, i.e. when one person completes a high intensity interval, the other person must now begin theirs.
Need some pointers getting started?
There are a lot of HIIT apps out there, so you can just search for that on your device of choice.
But!
We at 10almonds have recommended 7-Minute Workout before, which is available for iOS and for Android, and we stand by that as a great starting choice.
Enjoy!
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Native Americans Have Shorter Life Spans. Better Health Care Isn’t the Only Answer.
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HISLE, S.D. — Katherine Goodlow is only 20, but she has experienced enough to know that people around her are dying too young.
Goodlow, a member of the Lower Brule Sioux Tribe, said she’s lost six friends and acquaintances to suicide, two to car crashes, and one to appendicitis. Four of her relatives died in their 30s or 40s, from causes such as liver failure and covid-19, she said. And she recently lost a 1-year-old nephew.
“Most Native American kids and young people lose their friends at a young age,” said Goodlow, who is considering becoming a mental health therapist to help her community. “So, I’d say we’re basically used to it, but it hurts worse every time we lose someone.”
Native Americans tend to die much earlier than white Americans. Their median age at death was 14 years younger, according to an analysis of 2018-21 data from the Centers for Disease Control and Prevention
The disparity is even greater in Goodlow’s home state. Indigenous South Dakotans who died between 2017 and 2021 had a median age of 58 — 22 years younger than white South Dakotans, according to state data.
Donald Warne, a physician who is co-director of the Johns Hopkins Center for Indigenous Health and a member of the Oglala Sioux Tribe, can rattle off the most common medical conditions and accidents killing Native Americans.
But what’s ultimately behind this low life expectancy, agree Warne and many other experts on Indigenous health, are social and economic forces. They argue that in addition to bolstering medical care and fully funding the Indian Health Service — which provides health care to Native Americans — there needs to be a greater investment in case management, parenting classes, and home visits.
“It’s almost blasphemy for a physician to say,” but “the answer to addressing these things is not hiring more doctors and nurses,” Warne said. “The answer is having more community-based preventions.”
The Indian Health Service funds several kinds of these programs, including community health worker initiatives, and efforts to increase access to fresh produce and traditional foods.
Private insurers and state Medicaid programs, including South Dakota’s, are increasingly covering such services. But insurers don’t pay for all the services and aren’t reaching everyone who qualifies, according to Warne and the National Academy for State Health Policy.
Warne pointed to Family Spirit, a program developed by the Johns Hopkins center to improve health outcomes for Indigenous mothers and children.
Chelsea Randall, the director of maternal and child health at the Great Plains Tribal Leaders’ Health Board, said community health workers educate Native pregnant women and connect them with resources during home visits.
“We can be with them throughout their pregnancy and be supportive and be the advocate for them,” said Randall, whose organization runs Family Spirit programs across seven reservations in the Dakotas, and in Rapid City, South Dakota.
The community health workers help families until children turn 3, teaching parenting skills, family planning, drug abuse prevention, and stress management. They can also integrate the tribe’s culture by, for example, using their language or birthing traditions.
The health board funds Family Spirit through a grant from the federal Health Resources and Services Administration, Randall said. Community health workers, she said, use some of that money to provide child car seats and to teach parents how to properly install them to counter high rates of fatal crashes.
Other causes of early Native American deaths include homicide, drug overdoses, and chronic diseases, such as diabetes, Warne said. Native Americans also suffer a disproportionate number of infant and maternal deaths.
The crisis is evident in the obituaries from the Sioux Funeral Home, which mostly serves Lakota people from the Pine Ridge Reservation and surrounding area. The funeral home’s Facebook page posts obituaries for older adults, but also for many infants, toddlers, teenagers, young adults, and middle-aged residents.
Misty Merrival, who works at the funeral home, blames poor living conditions. Some community members struggle to find healthy food or afford heat in the winter, she said. They may live in homes with broken windows or that are crowded with extended family members. Some neighborhoods are strewn with trash, including intravenous needles and broken bottles.
Seeing all these premature deaths has inspired Merrival to keep herself and her teenage daughter healthy by abstaining from drugs and driving safely. They also talk every day about how they’re feeling, as a suicide-prevention strategy.
“We’ve made a promise to each other that we wouldn’t leave each other like that,” Merrival said.
Many Native Americans live in small towns or on poor, rural reservations. But rurality alone doesn’t explain the gap in life expectancy. For example, white people in rural Montana live 17 years longer, on average, than Native Americans in the state, according to state data reported by Lee Enterprises newspapers.
Many Indigenous people also face racism or personal trauma from child or sexual abuse and exposure to drugs or violence, Warne said. Some also deal with generational trauma from government programs and policies that broke up families and tried to suppress Native American culture.
Even when programs are available, they’re not always accessible.
Families without strong internet connections can’t easily make video appointments. Some lack cars or gas money to travel to clinics, and public transportation options are limited.
Randall, the health board official, is pregnant and facing her own transportation struggles.
It’s a three-hour round trip between her home in the town of Pine Ridge and her prenatal appointments in Rapid City. Randall has had to cancel several appointments when family members couldn’t lend their cars.
Goodlow, the 20-year-old who has lost several loved ones, lives with seven other people in her mother’s two-bedroom house along a gravel road. Their tiny community on the Pine Ridge Reservation has homes and ranches but no stores.
Goodlow attended several suicide-prevention presentations in high school. But the programs haven’t stopped the deaths. One friend recently killed herself after enduring the losses of her son, mother, best friend, and a niece and nephew.
A month later, another friend died from a burst appendix at age 17, Goodlow said. The next day, Goodlow woke up to find one of her grandmother’s parakeets had died. That afternoon, she watched one of her dogs die after having seizures.
“I thought it was like some sign,” Goodlow said. “I started crying and then I started thinking, ‘Why is this happening to me?’”
Warne said the overall conditions on some reservations can create despair. But those same reservations, including Pine Ridge, also contain flourishing art scenes and language and cultural revitalization programs. And not all Native American communities are poor.
Warne said federal, state, and tribal governments need to work together to improve life expectancy. He encourages tribes to negotiate contracts allowing them to manage their own health care facilities with federal dollars because that can open funding streams not available to the Indian Health Service.
Katrina Fuller is the health director at Siċaŋġu Co, a nonprofit group on the Rosebud Reservation in South Dakota. Fuller, a member of the Rosebud Sioux Tribe, said the organization works toward “wicozani,” or the good way of life, which encompasses the physical, emotional, cultural, and financial health of the community.
Siċaŋġu Co programs include bison restoration, youth development, a Lakota language immersion school, financial education, and food sovereignty initiatives.
“Some people out here that are struggling, they have dreams, too. They just need the resources, the training, even the moral support,” Fuller said. “I had one person in our health coaching class tell me they just really needed someone to believe in them, that they could do it.”
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
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Before You Eat Breakfast: 3 Surprising Facts About Intermittent Fasting
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Dr. William Li is well-known for his advocacy of “eating to beat disease”, and/but today he has advice for us about not eating to beat disease. In moderation, of course, thus: intermittent fasting.
The easy way
Dr. Li explains the benefits of intermittent fasting; how it improves the metabolism and gives the body a chance to do much-needed maintainance, including burning off any excess fat we had hanging around.
However, rather than calling for us to do anything unduly Spartan, he points out that it’s already very natural for us to fast while sleeping, so we only need to add a couple of hours before and after sleeping (assuming an 8 hour sleep), to make it to a 12-hour fast for close to zero effort and probably no discomfort.
And yes, he argues that a 12-hour fast is beneficial, and even if 16 hours would be better, we do not need to beat ourselves up about getting to 16; what is more important is sustainability of the practice.
Dr. Li advocates for flexibility in fasting, and that it should be done by what manner is easiest, rather than trying to stick to something religiously (of course, if you do fast for religious reasons, that is another matter, and/but beyond the scope of this today).
For more information on each of these, as well as examples and tips, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Intermittent Fasting: What’s the truth?
- 16/8 Intermittent Fasting For Beginners
- Meal Timings & Health: How Important Is Breakfast?
Take care!
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One More Resource Against Osteoporosis!
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Your Bones Were Made For Moving Too!
We know that to look after bone health, resistance training is generally what’s indicated. Indeed, we mentioned it yesterday, and we’ve talked about it before:
Resistance Is Useful! (Especially As We Get Older)
We also know that if you have osteoporosis already, some exercises are a better or worse idea than others:
Osteoporosis & Exercises: Which To Do (And Which To Avoid)
However! New research suggests that also getting in your recommended 150 minutes per week of moderate exercise slows bone density loss.
The study by Dr. Tiina Savikangas et al. looked at 299 people in their 70s (just over half being women) and found that, over the course of a year, bone mineral density loss was inversely correlated with moderate exercise as recorded by an accelerometer (as found in most fitness-tracking wearables and smartphones).
In other words: those who got more minutes of exercise, kept more bone mineral density.
As well as monitoring bone mineral density, the study also looked at cross-sectional area, but that remained stable throughout.
As for how much is needed:
❝Even short bursts of activity can be significant for the skeleton, so we also looked at movement in terms of the number and intensity of individual impacts. For example, walking and running cause impacts of different intensities.
We found that impacts that were comparable to at least brisk walking were associated with better preservation of bone mineral density.❞
Read more: Impacts during everyday physical activity can slow bone loss ← pop-science source, interviewing the lead researcher
On which note, we’ve a small bone to pick…
As a small correction, the pop-science source says that the subjects’ ages ranged from 70 to 85 years; the paper, meanwhile, clearly shows that the age-range was 74.4±3.9 years (shown in the “Results” table), rounded to 74.4 ± 4 years, in the abstract. So, certainly no participant was older than 78 years and four months.
Why this matters: the age range itself may be critical or it might not, but what is important is that this highlights how we shouldn’t just believe figures cited in pop-science articles, and it’s always good to click through to the source!
This paper is a particularly fascinating read if you have time, because—unlike a lot of studies—they really took great care to note what exactly can and cannot be inferred from the data, and how and why.
Especially noteworthy was the diligence with which they either controlled for, or recognized that they could not control for, far more variables than most studies even bother to mention.
This kind of transparency is critical for good science, and we’d love to see more of it!
Want to apply this to your life?
Tracking minutes-of-movement is one of the things that fitness trackers are best at, so connect your favourite app (one of these days we’ll do a fitness tracker comparison article) and get moving!
And as for the other things that fitness trackers do? As it turns out, they do have their strengths and weaknesses, which are good to bear in mind:
Take care!
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What Is Making The Ringing In Your Ears Worse?
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Dr. Rachael Cook, an audiologist at Applied Hearing Solutions in Phoenix, Arizona, shares her professional insights into managing tinnitus.
If you’re unfamiliar with Tinnitus, it is an auditory condition characterized by a ringing, buzzing, or humming sound, and ffects nearly 10% of the population. We’ve written on Tinnitus, and how it can disrupt your life, in this article.
Key Triggers for Tinnitus
Several everyday habits can make your tinnitus louder. Caffeine and nicotine increase blood pressure, restricting blood flow to the cochlea and worsening tinnitus. Common medications, such as pain relievers, high-dose antibiotics, and antidepressants, can also exacerbate tinnitus, especially with higher or long-term dosages.
Impact of Diet and Sleep
Dietary choices significantly impact tinnitus. Alcohol and salt alter the fluid balance in the cochlea, increasing tinnitus perception. Alcohol changes blood flow patterns and neurotransmitter production, while high salt intake has similar effects. Poor sleep quality elevates stress levels, making it harder to ignore tinnitus signals. Addressing sleep disorders like sleep apnea and insomnia can help manage tinnitus symptoms.
Importance of Treating Hearing Loss
Untreated hearing loss worsens tinnitus. Nearly 90% of individuals with tinnitus have some hearing loss. Hearing aids can reduce tinnitus perception by restoring missing sounds and reducing the brain’s internal compensatory signals. Combining hearing aids with sound therapy is said to provide even greater relief.
Read more about hearing loss in our article on the topic.
Otherwise, for a great guide on managing tinnitus, we recommend watching Dr. Cook’s video:
Here’s hoping your ear’s aren’t ringing too much whilst watching the video!
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Purpose – by Gina Bianchini
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To address the elephant in the room, this is not a rehash of Rick Warren’s best-selling “The Purpose-Driven Life”. Instead, this book is (in this reviewer’s opinion) a lot better. It’s a lot more comprehensive, and it doesn’t assume that what’s most important to the author will be what’s most important to you.
What’s it about, then? It’s about giving your passion (whatever it may be) the tools to have an enduring impact on the world. It recommends doing this by leveraging a technology that would once have been considered magic: social media.
Far from “grow your brand” business books, this one looks at what really matters the most to you. Nobody will look back on your life and say “what a profitable second quarter that was in such-a-year”. But if you do your thing well, people will look back and say:
- “he was a pillar of the community”
- “she raised that community around her”
- “they did so much for us”
- “finding my place in that community changed my life”
- …and so forth. Isn’t that something worth doing?
Bianchini takes the position of both “idealistic dreamer” and “realistic worker”.
Further, she blends the two beautifully, to give practical step-by-step instructions on how to give life to the community that you build.
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Is stress turning my hair grey?
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When we start to go grey depends a lot on genetics.
Your first grey hairs usually appear anywhere between your twenties and fifties. For men, grey hairs normally start at the temples and sideburns. Women tend to start greying on the hairline, especially at the front.
The most rapid greying usually happens between ages 50 and 60. But does anything we do speed up the process? And is there anything we can do to slow it down?
You’ve probably heard that plucking, dyeing and stress can make your hair go grey – and that redheads don’t. Here’s what the science says.
What gives hair its colour?
Each strand of hair is produced by a hair follicle, a tunnel-like opening in your skin. Follicles contain two different kinds of stem cells:
- keratinocytes, which produce keratin, the protein that makes and regenerates hair strands
- melanocytes, which produce melanin, the pigment that colours your hair and skin.
There are two main types of melanin that determine hair colour. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment.
The amount of the different pigments determines hair colour. Black and brown hair has mostly eumelanin, red hair has the most pheomelanin, and blonde hair has just a small amount of both.
So what makes our hair turn grey?
As we age, it’s normal for cells to become less active. In the hair follicle, this means stem cells produce less melanin – turning our hair grey – and less keratin, causing hair thinning and loss.
As less melanin is produced, there is less pigment to give the hair its colour. Grey hair has very little melanin, while white hair has none left.
Unpigmented hair looks grey, white or silver because light reflects off the keratin, which is pale yellow.
Grey hair is thicker, coarser and stiffer than hair with pigment. This is because the shape of the hair follicle becomes irregular as the stem cells change with age.
Interestingly, grey hair also grows faster than pigmented hair, but it uses more energy in the process.
Can stress turn our hair grey?
Yes, stress can cause your hair to turn grey. This happens when oxidative stress damages hair follicles and stem cells and stops them producing melanin.
Oxidative stress is an imbalance of too many damaging free radical chemicals and not enough protective antioxidant chemicals in the body. It can be caused by psychological or emotional stress as well as autoimmune diseases.
Environmental factors such as exposure to UV and pollution, as well as smoking and some drugs, can also play a role.
Melanocytes are more susceptible to damage than keratinocytes because of the complex steps in melanin production. This explains why ageing and stress usually cause hair greying before hair loss.
Scientists have been able to link less pigmented sections of a hair strand to stressful events in a person’s life. In younger people, whose stems cells still produced melanin, colour returned to the hair after the stressful event passed.
4 popular ideas about grey hair – and what science says
1. Does plucking a grey hair make more grow back in its place?
No. When you pluck a hair, you might notice a small bulb at the end that was attached to your scalp. This is the root. It grows from the hair follicle.
Plucking a hair pulls the root out of the follicle. But the follicle itself is the opening in your skin and can’t be plucked out. Each hair follicle can only grow a single hair.
It’s possible frequent plucking could make your hair grey earlier, if the cells that produce melanin are damaged or exhausted from too much regrowth.
2. Can my hair can turn grey overnight?
Legend says Marie Antoinette’s hair went completely white the night before the French queen faced the guillotine – but this is a myth.
Melanin in hair strands is chemically stable, meaning it can’t transform instantly.
Acute psychological stress does rapidly deplete melanocyte stem cells in mice. But the effect doesn’t show up immediately. Instead, grey hair becomes visible as the strand grows – at a rate of about 1 cm per month.
Not all hair is in the growing phase at any one time, meaning it can’t all go grey at the same time.
3. Will dyeing make my hair go grey faster?
This depends on the dye.
Temporary and semi-permanent dyes should not cause early greying because they just coat the hair strand without changing its structure. But permanent products cause a chemical reaction with the hair, using an oxidising agent such as hydrogen peroxide.
Accumulation of hydrogen peroxide and other hair dye chemicals in the hair follicle can damage melanocytes and keratinocytes, which can cause greying and hair loss.
4. Is it true redheads don’t go grey?
People with red hair also lose melanin as they age, but differently to those with black or brown hair.
This is because the red-yellow and black-brown pigments are chemically different.
Producing the brown-black pigment eumelanin is more complex and takes more energy, making it more susceptible to damage.
Producing the red-yellow pigment (pheomelanin) causes less oxidative stress, and is more simple. This means it is easier for stem cells to continue to produce pheomelanin, even as they reduce their activity with ageing.
With ageing, red hair tends to fade into strawberry blonde and silvery-white. Grey colour is due to less eumelanin activity, so is more common in those with black and brown hair.
Your genetics determine when you’ll start going grey. But you may be able to avoid premature greying by staying healthy, reducing stress and avoiding smoking, too much alcohol and UV exposure.
Eating a healthy diet may also help because vitamin B12, copper, iron, calcium and zinc all influence melanin production and hair pigmentation.
Theresa Larkin, Associate Professor of Medical Sciences, University of Wollongong
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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