
What are heart rate zones, and how can you incorporate them into your exercise routine?
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If you spend a lot of time exploring fitness content online, you might have come across the concept of heart rate zones. Heart rate zone training has become more popular in recent years partly because of the boom in wearable technology which, among other functions, allows people to easily track their heart rates.
Heart rate zones reflect different levels of intensity during aerobic exercise. They’re most often based on a percentage of your maximum heart rate, which is the highest number of beats your heart can achieve per minute.
But what are the different heart rate zones, and how can you use these zones to optimise your workout?
The three-zone model
While there are several models used to describe heart rate zones, the most common model in the scientific literature is the three-zone model, where the zones may be categorised as follows:
- zone 1: 55%–82% of maximum heart rate
- zone 2: 82%–87% of maximum heart rate
- zone 3: 87%–97% of maximum heart rate.
If you’re not sure what your maximum heart rate is, it can be calculated using this equation: 208 – (0.7 × age in years). For example, I’m 32 years old. 208 – (0.7 x 32) = 185.6, so my predicted maximum heart rate is around 186 beats per minute.
There are also other models used to describe heart rate zones, such as the five-zone model (as its name implies, this one has five distinct zones). These models largely describe the same thing and can mostly be used interchangeably.
What do the different zones involve?
The three zones are based around a person’s lactate threshold, which describes the point at which exercise intensity moves from being predominantly aerobic, to predominantly anaerobic.
Aerobic exercise uses oxygen to help our muscles keep going, ensuring we can continue for a long time without fatiguing. Anaerobic exercise, however, uses stored energy to fuel exercise. Anaerobic exercise also accrues metabolic byproducts (such as lactate) that increase fatigue, meaning we can only produce energy anaerobically for a short time.
On average your lactate threshold tends to sit around 85% of your maximum heart rate, although this varies from person to person, and can be higher in athletes.
In the three-zone model, each zone loosely describes one of three types of training.
Zone 1 represents high-volume, low-intensity exercise, usually performed for long periods and at an easy pace, well below lactate threshold. Examples include jogging or cycling at a gentle pace.
Zone 2 is threshold training, also known as tempo training, a moderate intensity training method performed for moderate durations, at (or around) lactate threshold. This could be running, rowing or cycling at a speed where it’s difficult to speak full sentences.
Zone 3 mostly describes methods of high-intensity interval training, which are performed for shorter durations and at intensities above lactate threshold. For example, any circuit style workout that has you exercising hard for 30 seconds then resting for 30 seconds would be zone 3.
Striking a balance
To maximise endurance performance, you need to strike a balance between doing enough training to elicit positive changes, while avoiding over-training, injury and burnout.
While zone 3 is thought to produce the largest improvements in maximal oxygen uptake – one of the best predictors of endurance performance and overall health – it’s also the most tiring. This means you can only perform so much of it before it becomes too much.
Training in different heart rate zones improves slightly different physiological qualities, and so by spending time in each zone, you ensure a variety of benefits for performance and health.
So how much time should you spend in each zone?
Most elite endurance athletes, including runners, rowers, and even cross-country skiers, tend to spend most of their training (around 80%) in zone 1, with the rest split between zones 2 and 3.
Because elite endurance athletes train a lot, most of it needs to be in zone 1, otherwise they risk injury and burnout. For example, some runners accumulate more than 250 kilometres per week, which would be impossible to recover from if it was all performed in zone 2 or 3.
Of course, most people are not professional athletes. The World Health Organization recommends adults aim for 150–300 minutes of moderate intensity exercise per week, or 75–150 minutes of vigorous exercise per week.
If you look at this in the context of heart rate zones, you could consider zone 1 training as moderate intensity, and zones 2 and 3 as vigorous. Then, you can use heart rate zones to make sure you’re exercising to meet these guidelines.
What if I don’t have a heart rate monitor?
If you don’t have access to a heart rate tracker, that doesn’t mean you can’t use heart rate zones to guide your training.
The three heart rate zones discussed in this article can also be prescribed based on feel using a simple 10-point scale, where 0 indicates no effort, and 10 indicates the maximum amount of effort you can produce.
With this system, zone 1 aligns with a 4 or less out of 10, zone 2 with 4.5 to 6.5 out of 10, and zone 3 as a 7 or higher out of 10.
Heart rate zones are not a perfect measure of exercise intensity, but can be a useful tool. And if you don’t want to worry about heart rate zones at all, that’s also fine. The most important thing is to simply get moving.
Hunter Bennett, Lecturer in Exercise Science, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Hidden Risk of Stretching: Avoiding Hamstring Injuries in Yoga
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What is Yoga Butt
Have you ever experienced a mysterious pain while stretching, or perhaps during yoga? You might be dealing with “yoga butt,” a common—although rarely discussed—injury. In the below video, the Lovely Liv from Livinleggings shares her journey of discovering, and overcoming, “yoga butt”.
Dealing With Yoga Butt
Yoga butt, or proximal hamstring tendinopathy, occurs when the hamstrings are overstretched without adequate strengthening. Many yoga poses help stretch the hamstrings, but often don’t focus on strengthening said hamstrings; this imbalance is what can lead to damage over time.
To help prevent Yoga butt, it’s essential to balance stretching with strengthening. You can look into incorporating hamstring-strengthening exercises like Romanian deadlifts, hamstring curls, and modified yoga poses into your routine.
(If you’re new to strengthening exercises, we recommend reading Women’s Strength Training Anatomy Workouts or Strength Training for Seniors).
Watch the full video to learn more and hopefully protect yourself from long-term injuries:
Let us know your thoughts, and whether you have any other topics you’d like us to cover.
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Coffee & Your Gut
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Coffee, in moderation, is generally considered a healthful drink—speaking for the drink itself, at least! Because the same cannot be said for added sugar, various sorts of creamers, or iced caramelatte mocha frappucino dessert-style drinks:
The Bitter Truth About Coffee (or is it?)
Caffeine, too, broadly has more pros than cons (again, in moderation):
Caffeine: Cognitive Enhancer Or Brain-Wrecker?
Some people will be concerned about coffee and the heart. Assuming you don’t have a caffeine sensitivity (or you do but you drink decaf), it is heart-neutral in moderation, though there are some ways of preparing it that are better than others:
Make Your Coffee Heart-Healthier!
So, what about coffee and the gut?
The bacteria who enjoy a good coffee
Amongst our trillions of tiny friends, allies, associates, and enemies-on-the-inside, which ones like coffee, and what kind of coffee do they prefer?
A big (n=35,214) international multicohort analysis examined the associations between coffee consumption and very many different gut microbial species, and found:
115 species were positively associated with coffee consumption, mostly of the kind considered “friendly”, including ones often included in probiotic supplements, such as various Bifidobacterium and Lactobacillus species.
The kind that was most strongly associated with coffee consumption, however, was Lawsonibacter asaccharolyticus, a helpful little beast who converts chlorogenic acid (one of the main polyphenols in coffee) into caffeic acid, quinic acid, and various other metabolites that we can use.
More specifically: moderate coffee-drinkers, defined as drinking 1–3 cups per day, enjoyed a 300–400% increase in L. asaccharolyticus, while high coffee-drinkers (no, not that kind of high), defined as drinking 4 or more cups of coffee per day, enjoyed a 400–800% increase, compared to “never/rarely” coffee-drinkers (defined as drinking 2 or fewer cups per month).
Click here to see more data from the study, in a helpful infographic
Things that did not affect the outcome:
- The coffee-making method—it seems the bacteria are not fussy in this regard, as espresso or brewed, and even instant, yielded the same gut microbiome benefits
- The caffeine content—as both caffeinated and decaffeinated yielded the same gut microbiome benefits
You can read the paper itself in full for here:
Want to enjoy coffee, but not keen on the effects of caffeine or the taste of decaffeinated?
Taking l-theanine alongside coffee flattens the curve of caffeine metabolism, and means one can get the benefits without unwanted jitteriness:
Enjoy!
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6 Daily Habits To Keep Your Brain Young & Sharp
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Without brain health, we do not have health. So here are six ways to keep it in order:
Food for thought
The six areas to focus on are as follows:
- Physical exercise: as we at 10almonds sometimes say, what’s good for the heart is good for the brain (because the brain is only as healthy as the circulation feeding it). For this reason, the recommendation here is for physical exercise that improves heart health—so, walking, running, swimming, dancing, etc.
- Healthy diet: shocking nobody, this is important too. Specifically, a diet rich in fruits, vegetables, and healthy proteins and fats is important—partly for the heart benefits that give indirect benefits to the brain, and partly because the brain is built of stuff and so we have to consume that stuff in order to rebuild it (omega-3s features strongly here, for instance). Remember to hydrate, too! The body can’t do anything without water.
- Good sleep: yes, the famous 7–9 hours sleep per night, and yes, even at your age, whatever that might be. This is important for memory consolidation, cell repair, toxin removal, and more. Sleep deprivation, on the other hand, leads to cognitive decline and brain shrinkage.
- Mental stimulation: ideally, engaging those parts of the brain you most wish to protect (e.g. language, memory, or whatever is most important to you).
- Social interaction: this one gets underestimated a lot, but it’s important to have meaningful conversations (not just polite smalltalk from a small menu of stock phrases), and that these should be two-way, i.e. involving both listening/reading and speaking/writing. Ideally, all four of those, which for most people means online and offline social interactions.
- Stress management: because chronic stress damages brain cells and accelerates cognitive decline, it’s important to manage that; practices like mindfulness meditation go a very long way and make a big difference.
For more on all of these, enjoy:
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Want to learn more?
You might also like to read:
The Physical Exercises That Build Your Brain ← this is different from just exercising for one’s heart and thus the brain by extension, and rather, is specific exercises that strengthen specific parts of the brain.
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A Hospital Kept a Brain-Damaged Patient on Life Support to Boost Statistics. His Sister Is Now Suing for Malpractice.
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ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for The Big Story newsletter to receive stories like this one in your inbox.
In 2018, Darryl Young was hoping for a new lease on life when he received a heart transplant at a New Jersey hospital after years of congestive heart failure. But he suffered brain damage during the procedure and never woke up.
The following year, a ProPublica investigation revealed that Young’s case was part of a pattern of heart transplants that had gone awry at Newark Beth Israel Medical Center in 2018. The spate of bad outcomes had pushed the center’s percentage of patients still alive one year after surgery — a key benchmark — below the national average. Medical staff were under pressure to boost that metric. ProPublica published audio recordings from meetings in which staff discussed the need to keep Young alive for a year, because they feared another hit to the program’s survival rate would attract scrutiny from regulators. On the recordings, the transplant program’s director, Dr. Mark Zucker, cautioned his team against offering Young’s family the option of switching from aggressive care to comfort care, in which no lifesaving efforts would be made. He acknowledged these actions were “very unethical.”
ProPublica’s revelations horrified Young’s sister Andrea Young, who said she was never given the full picture of her brother’s condition, as did the findings of a subsequent federal regulator’s probe that determined that the hospital was putting patients in “immediate jeopardy.” Last month, she filed a medical malpractice lawsuit against the hospital and members of her brother’s medical team.
The lawsuit alleges that Newark Beth Israel staff were “negligent and deviated from accepted standards of practice,” leading to Young’s tragic medical outcome.
Defendants in the lawsuit haven’t yet filed responses to the complaint in court documents. But spokesperson Linda Kamateh said in an email that “Newark Beth Israel Medical Center is one of the top heart transplant programs in the nation and we are committed to serving our patients with the highest quality of care. As this case is in active litigation, we are unable to provide further detail.” Zucker, who is no longer on staff at Newark Beth Israel, didn’t respond to requests for comment. His attorney also didn’t respond to calls and emails requesting comment.
Zucker also didn’t respond to requests for comment from ProPublica in 2018; Newark Beth Israel at the time said in a statement, made on behalf of Zucker and other staff, that “disclosures of select portions of lengthy and highly complex medical discussions, when taken out of context, may distort the intent of conversations.”
The lawsuit alleges that Young suffered brain damage as a result of severely low blood pressure during the transplant surgery. In 2019, when the federal Centers for Medicare and Medicaid Services scrutinized the heart transplant program following ProPublica’s investigation, the regulators found that the hospital had failed to implement corrective measures even after patients suffered, leading to further harm. For example, one patient’s kidneys failed after a transplant procedure in August 2018, and medical staff made recommendations internally to increase the frequency of blood pressure measurement during the procedure, according to the lawsuit. The lawsuit alleges that the hospital didn’t implement its own recommendations and that one month later, “these failures were repeated” in Young’s surgery, leading to brain damage.
The lawsuit also alleges that Young wasn’t asked whether he had an advance directive, such as a preference for a do-not-resuscitate order, despite a hospital policy stating that patients should be asked at the time of admission. The lawsuit also noted that CMS’ investigation found that Andrea Young was not informed of her brother’s condition.
Andrea Young said she understands that mistakes can happen during medical procedures, “however, it’s their duty and their responsibility to be honest and let the family know exactly what went wrong.” Young said she had to fight to find out what was going on with her brother, at one point going to the library and trying to study medical books so she could ask the right questions. “I remember as clear as if it were yesterday, being so desperate for answers,” she said.
Andrea Young said that she was motivated to file the lawsuit because she wants accountability. “Especially with the doctors never, from the outset, being forthcoming and truthful about the circumstances of my brother’s condition, not only is that wrong and unethical, but it took a lot away from our entire family,” she said. “The most important thing to me is that those responsible be held accountable.”
ProPublica’s revelation of “a facility putting its existence over that of a patient is a scary concept,” said attorney Jonathan Lomurro, who’s representing Andrea Young in this case with co-counsel Christian LoPiano. Besides seeking damages for Darryl Young’s children, “we want to call attention to this so it doesn’t happen again,” Lomurro said.
The lawsuit further alleges that medical staff at Newark Beth Israel invaded Young’s privacy and violated the Health Insurance Portability and Accountability Act, more commonly known as HIPAA, by sharing details of his case with the media without his permission. “We want people to be whistleblowers and want information out,” but that information should be told to patients and their family members directly, Lomurro said.
The 2019 CMS investigation determined that Newark Beth Israel’s program placed patients in “immediate jeopardy,” the most serious level of violation, and required the hospital to implement corrective plans. Newark Beth Israel did not agree with all of the regulator’s findings and in a statement at the time said that the CMS team lacked the “evidence, expertise and experience” to assess and diagnose patient outcomes.
The hospital did carry out the corrective plans and continues to operate a heart transplant program today. The most recent federal data, based on procedures from January 2021 through June 2023, shows that the one year probability of survival for a patient at Newark Beth is lower than the national average. It also shows that the number of graft failures, including deaths, in that time period was higher than the expected number of deaths for the program.
Andrea Young said she’s struggled with a feeling of emptiness in the years after her brother’s surgery. They were close and called each other daily. “There’s nothing in the world that can bring my brother back, so the only solace I will have is for the ones responsible to be held accountable,” she said. Darryl Young died on Sept 12, 2022, having never woken up after the transplant surgery.
A separate medical malpractice lawsuit filed in 2020 by the wife of another Newark Beth Israel heart transplant patient who died after receiving an organ infected with a parasitic disease is ongoing. The hospital has denied the allegations in court filing. The state of New Jersey, employer of the pathologists named in the case, settled for $1.7 million this month, according to the plaintiff’s attorney Christian LoPiano. The rest of the case is ongoing.
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Watermelon vs Cucumber – Which is Healthier?
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Our Verdict
When comparing watermelon to cucumber, we picked the cucumber.
Why?
Both are good! But in the battle of the “this is mostly water” salad items, cucumber wins out.
In terms of macros they both are, as we say, mostly water. However, watermelon contains more sugar for the same amount of fiber, contributing to cucumber having the lower glycemic index.
When it comes to vitamins, watermelon does a little better; watermelon has more of vitamins A, B1, B3, B6, C, and E, while cucumber has more of vitamins B2, B5, B9, K, and choline. So, a modest 6:5 win for watermelon.
In the category of minerals, it’s a different story; watermelon has more selenium, while cucumber has more calcium, iron, magnesium, manganese, phosphorus, potassium, and zinc.
Both contain an array of polyphenols; mostly different ones from each other.
As ever, enjoy both. However, adding up the sections, we say cucumber enjoys a marginal win here.
Want to learn more?
You might like to read:
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Parsnips vs Potatoes – Which is Healthier?
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Our Verdict
When comparing parsnips to potatoes, we picked the parsnips.
Why?
To be more specific, we’re looking at russet potatoes, and in both cases we’re looking at cooked without fat or salt, skin on. In other words, the basic nutritional values of these plants in edible form, without adding anything. With this in mind, once we get to the root of things, there’s a clear winner:
Looking at the macros first, potatoes have more carbs while parsnips have more fiber. Potatoes do have more protein too, but given the small numbers involved when it comes to protein we don’t think this is enough of a plus to outweigh the extra fiber in the parsnips.
In the category of vitamins, again a champion emerges: parsnips have more of vitamins B1, B2, B5, B9, C, E, and K, while potatoes have more of vitamins B3, B6, and choline. So, a 7:3 win for parsnips.
When it comes to minerals, parsnips have more calcium copper, manganese, selenium, and zinc, while potatoes have more iron and potassium. Potatoes do also have more sodium, but for most people most of the time, this is not a plus, healthwise. Disregarding the sodium, this category sees a 5:2 win for parsnips.
In short: as with most starchy vegetables, enjoy both in moderation if you feel so inclined, but if you’re picking one, then parsnips are the nutritionally best choice here.
Want to learn more?
You might like to read:
- Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
- Should You Go Light Or Heavy On Carbs?
Take care!
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