The Reality Regarding Heartbeat so when It Doesn t Matter


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What is a normal heart rate?

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Your heart is a busy muscle. Its main job is to pump blood to other areas of the body that need it, delivering much-needed oxygen to muscles and organs. If you’re resting, the heart doesn’t pump very fast (the average HR of a healthy adult is about 60 beats per minute).

But if you’re working hard, the heart beats faster to keep up with energy demands. As you exercise, the heart. The higher your heart rate is, the more calories you will burn, but less fat. It is important to spend the most time around 70 percent, but increase your intensity at some point during your workout in order to get that extra calorie burn.

Wearing a heart rate monitor and keeping an eye on your heart rate will prevent under or over training. The overreaction to these problems has taken the form of proposing that heart-rate training doesn’t matter when it comes to measuring exercise intensity, especially with the rise in popularity of high-intensity interval training, where the directive is a. When your heart rate is too slow, it’s referred to as bradycardia.

Bradycardia is typically defined as a heart rate that’s less than 60 beats per minute. For athletes and people that exercise. If your resting heart rate is lower than 60 beats per minute, that’s known as bradycardia.

In serious cases, your heart may not be able to pump enough blood to the rest of your body. Certain. So while it doesn’t “come as a surprise,” that novel coronavirus called SARS-CoV-2 can lead to heart damage, it may be occurring more frequently in these patients than it does in people infected. “It doesn’t matter how healthy you are or how healthy you think you are,” Dr.

Doshi says. “If your heart doesn’t feel right for you, it’s worth getting a checkup.” Relate. An electrocardiogram measures the activity of your heart through the use of electrodes on sensors placed on your skin. A resting normal heart rate for an adult ages 18 and older is 60 to 100 beats per minute. For a child, a normal resting heart rate is 70 to 100 beats per minute.

The fact that your heart rate is remaining lower than normal (under 60 beats per minute is called bradycardia) AND you’re symptomatic (short of breath, shaky, weak and lightheaded) with even slight activity indicates that your heart is not compensating for this as it normally would. We tested 11 heart-rate monitors – ranging in price from $29 to $200. To determine their precision, we compared them against measurements taken from a.

List of related literature:

Vessel dilation may be slower when athletes become excessively 80 fatigued; therefore, the difference between the lying and standing heart rates will increase.

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Many athletes become aware of this if they regularly measure their morning heart rate and train with a heart-rate monitor.

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from The Big Book of Endurance Training and Racing
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That’s why the heart rate has been used in doctor visits as a routine cardiac health measurement approach.

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from Biomedical Signal Processing: Advances in Theory, Algorithms and Applications
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So when you report the average heart rate you essentially ignore all this variability and the information it contains.

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Heart rate by itself does not tell you how well you’re performing in a workout or a race, and yet many athletes try to draw conclusions from one number.

“The Cyclist's Training Bible” by Joe Friel
from The Cyclist’s Training Bible
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VeloPress, 2012

Perhaps even more important than heart rate, but much harder to measure is cardiac output in response to exercise.

“The Science of Fitness: Power, Performance, and Endurance” by Greg LeMond, Mark Hom
from The Science of Fitness: Power, Performance, and Endurance
by Greg LeMond, Mark Hom
Elsevier Science, 2014

To summarize, the more active the vagus nerve, the slower the heart rate, which reduces the likelihood of an irregular heartbeat.

“The Rhodiola Revolution: Transform Your Health with the Herbal Breakthrough of the 21st Century” by Richard P. Brown, M.D., Patricia L. Gerbarg, M.D., Barbara Graham
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That study (O’Toole et al. 1998) found that although the 220 minus age formula for calculating the maximum heart rate was more accurate than another popular formula of 210 (0.5 x age), individual variation in maximum heart rate was great.

“Lore of Running” by Timothy Noakes
from Lore of Running
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It is also important to note that a variety of external factors can affect resting heart rate.

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from NSCA’s Guide to Tests and Assessments
by NSCA -National Strength & Conditioning Association, Todd A. Miller
Human Kinetics, Incorporated, 2012

This understanding can actually produce the heart rate and other physical changes Ekman and colleagues observed, a fact that was unknown when these studies were conducted.

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Alexia Lewis RD

Registered Dietitian Nutritionist and Certified Heath Coach who believes life is better with science, humor, and beautiful, delicious, healthy food.

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  • My heart rate is always above 90. When they monitored my heart (I was laying down) it was at 135. It’s because I’m too stressed all the time.

  • Multiply by 6….yea right. I want to see you during a hard cardio session multipling numbers like 27, 24,34.
    Just take the HR for 6 secs and X10….

  • Hey scishow can you make opposite video about how slow heart can beat i was born with bradycardia condition which makes my heart beat slower then normal human but doctor warned me there are some consequences when it reach some breakpoint and i am curious where it sits thx in advance

  • I have a background in fitness and have exercised just about my entire life. I am currently 67 and do strength training and cardio vigorously 3X week and on off days I walk. My cardio consists of 30min of interval work on an elliptical or bike. I can not run any more because of knee issues. My training rate is as high as 165 and only as low as 145. I recently got concerned when I had my annual physical and my resting heat rate was 94 BP 120/80. BP and resting HR were high for me? I have since been monitoring my resting heart rate and just sitting around it averages in the 80’s???? Laying down at night in the middle of the night it may drop to 70. I don’t understand what is going on? My resting heart rate should be in the 60’s and has been. There is no history of heart disease in my family and I have no other symptoms. My primary care Doc. is not concerned!!! but I am. (this is my first year with this doctor as the my other doctor retired. Should I see a cardiologist? I feel fine but this heart rate is concerning me.

  • I like my fitbit. I don’t expect it to give me 100% accurate data, i expect it to give me a general idea of my miles walked and general activity. Only an idiot would trust one data point or one source of data.

  • Sooooo, are we just gonna ignore the fact that this song is fucking trash? Like… It’s one of those things that both shatters and restores my faith in humanity. Shatters because of how awful it is restores because I am legitimately impressed by the dedication to produce ever more terrible sound.
    People used to say jazz was Satan’s tongue. Then it was rock’n’roll. Then it was just about any music with anything remotely sexual or edgy. However, unlike that music, this might actually be bad enough for Satan to use for torturing the damned.
    I sincerely hope there is some kind of a universal cap on how bad music can get (like how there are caps on speed, energy, and efficiency), but unfortunately I’m not seeing a lot of evidence. If there is such a cap, it’s certainly approached by a significant portion of modern music and I can’t think of a single song with more than 200 million views on a single video that didn’t blow ass.

  • Maybe an analogy for people to better understand heart rate‘s connection with calory burn: How well can you infer your car‘s fuel consumption based on rpm alone? Not very well. Yes, they are connected, but a larger or turbocharged engine can run the same speed at lower rpms. Also, as with cars, a heavy person will need more energy to achieve and to maintain the same speed as a lighter one and hence, will also need a larger or more turbocharged engine. Only that turbocharging euqals greater VO2max for people.

  • eye greg, question. When I was learning about HR in my kin class we did some tests and my resting was about 40bpm. I could only ever get it up to like 140. I was also struggling a lot more with anorexia, I was so not in good shape but I had a low HR and Bp measure. of course a lot of people credited this to my fitness, cool but I couldn’t even like get my head off the pillow in the am. I’m assuming its just the body shutting down, but is there any other explanation the two polar opposites can mirror each other like that? ps I love your videos. though my recovery I’ve worked with so many obese dietitians, one of which worked on a dairy farm:) loved recommending her cheese line to the diabetic patients who needed to loose weight. sad to see how many health professionals are so lacking in the common sense certification. only thing thats helped me through this after 4 years of hospitalizations and dieticians is getting myself a damn personal trainer.

  • Sir give me a good idea..What do we do right now My wife heartbeat 50 to 60 ups and downs and It does not fluctuate much and sometimes a lot of pain in her chest,last seven days she has given birth to a baby, Sir can you tell me what is the reason she is having such a problem?

  • Hmm… That piece about not letting my heart rate get too high is pretty relevant for me. (My heart rate likes to shoot up close to 300 during what should be a moderate workout, yay broken genetics) So, how do I account for my heart not filling with blood?

  • I once had a heart rate of almost 300 beats per minute. I almost died. I spent 8 days in the hospital as doctors tried to keep it down. They said if it kept up, my heart would have ended up just giving up. It was like my heart was running a marathon continuously, non stop. There’s only so long it can do that.

  • Mine beats way too fast, right now my resting rate is 100. Which is what my heart beat sensors say on my phone and fitness watch. And when I exercise it jumps to 250-300.

    I’m probably going to die soon

  • Mine varies from 49-185. I am 13 and gonn die soon halp

    (Edit: I would like to state that I am healthy and have no medical conditions)

  • I’m 27, underweight and in the last 3 years had a bad lifestyle I rarely exercise those years. And now my resting heart rate is 96-110.
    I’m starting to change my lifestyle right now and will do 30mins cycling daily plus other exercise. Let’s see how it goes. Maybe I’ll update the result here after few weeks or months.

  • calm down, your resting heart rate is out of control:D
    also, Watt is a unit of power. Joule or calorie is a unit of energy. Power = energy / time.

  • A feedback on the video itself: I’m unable to speed it up, which YouTube usually offers on my videos. I found the overall pace of the video to be a little slow.

  • I do not believe he talked about whether to check resting heart rate laying, sitting or standing. My laying resting HR is 105 my standing resting HR is 165. I have dysautonomia specifically Inappropriate Sinus Tachycardia and Postural Orthostatic Tachycardia Syndrome. I do not believe he talked about weather to check resting heart rate laying, sitting or

  • What would an ideal range for heart rate variability be? I’ve seen so many different things online. Mine is rarely above 40 in the morning but I’m not really sure what that means. Thanks!

  • Im stressed because I’m starting to fall for a us size lady but I’m really small myself and last time I did she took my v card and ruined my life

  • I care for heart rate monitor on my watch because I like knowing my resting heart rate. The steps and calories burned are BS but you can just ignore those.

    Fitbit is also a smart watch that alerts you of texts and stuff. It’s also a watch. These are the reasons to get a Fitbit.

    Some smart watches have gps as well.

  • They take all these factors into consideration. Ur height, ur weight, ur heart rate, the weather outside, whether or not or doing cardio on an incline, how fast ur running etc etc etc. So I’d say they are pretty accurate

  • Fitness makes a difference to the heart rate, when i was running 70 miles a week and training for a marathon my resting pulse was only 38.

  • I’m a healthy 25 year old woman with a heart disease, I take a low dose of blood pressure meds in the morning but even at 11 pm, running, my heart beat can only get up to 120 max….

  • I am 56 Years old. During the day my Heart Rate is 50 70 BPM… I Raced Motocross/Mountain Bikes for 30 Years.
    During the Night my Heart Drops down to “22 BPM” and Sets off Heart Machines in the Hospital. They were going to ZAP me.
    I did a Heart Data Logger for 1 Month. And it was Confirmed my Heart slows down to 22 BPM on Record at the Hospital.
    And I feel completely fine. I may have the World Record. Am I OK????? My Doctor says I am Fine.

    I’ve been Riding PUSH BIKES non STOP for 50 YEARS. I think that’s why my healthy Heart Pumps so slow. I HOPE.

  • Mi hermano se suicidó hace 4 años, por alguna razón escuche la canción y pensé él, ahora vengo y veo el video y no paro de llorar. Mañana cumpliria 36. En 4 años aún me duele como si fuese ayer, este dolor nunca se ira.

  • Im 26 Years Old, im suffered with hyperthyroidsm, currently consuming Carbimazole 10mg and Propanolol 10mg per day, my resting heart rate lower than 60, sometimes 53-59. Im not active person but healthy eating for about 2 months, i cut 80% Salt on my food, is this normal?

  • I’m 28 and My resting heart ❤️ is 56, i was worried and uneducated in this area. Haha i feel better now. I was like what the flying F!? I run ���� a lot.. haha.

  • I’m 5’9, 163 pounds and I go between 74-105 resting. I’m in very good shape, but can almost sense that my heart is going overtime. Working on getting it down to 60ish

  • İ totally agree
    But isn’t heart also a muscle so the more blood it pumps the more calories it burns?
    I know that wouldn’t be much but just sayin

  • Calories are a unit of energy

    Energy can be calculated by Force x distance (hence Greg gave the 1 mile jump analogy). Force = Mass x Acceleration. If acceleration is kept constant, greater mass will mean a greater force, so for the same distance two people exercise, the person who’s heavier will use up more energy aka burn more calories.

  • That seems strange to me. I’m 38 years old and when I cycle fast, I get around 180 bpm. According to that formula, I”m pushing myself too much. Is that really true? I actually feel like I even could go faster.

  • I walk between 90-110 miles a week with my dog & work out on my heavy bag 4 times a week 20 minutes each time.I am 51 years old & have a resting heart rate of 48-54 beats a minute.My doctor say’s my heart beat is extremely strong & healthy & the reason i have a slow heart rate is because of all the exercise i do & to keep it up.

  • Lower numbers in any range is always good for the heart. Check athletes and super healthy people. They are the correct references for any model health test.

  • so proud of greg, his latest bpm record was 190-ish and in this video he said that 170 would be his perfect best
    goes to show you can never stop getting better


  • Well it can go 300 bpm if you go into V-tach or SVT, but I think they were asking about the maximum rate for a physiological response to exercise. (220-Age is a pretty good estimate). You really don’t have to worry about your heart beating too fast to fill unless you have a heart disorder.

  • And I guess it is pretty bad for your health to reach your “max heart rate” just by adrenaline from being really happy and excited about a score on a video game heh?

  • Okay so I’m an athlete but I have like no meat on my bones so I can sometimes see my heart beating through my chest, is this bad? I’m 13 and I have a Bpm between 60-72ish but when I walk around and sit back down it spikes to 86. Is this normal?

  • I’m sorry to ask this but may I know who are you bcs I need to put the description about my sources on my assignment. I don’t need the personal information, just the informtion on the surface. Like are you a professor at some university or smth like that.

  • I’m 27, underweight and in the last 3 years had a bad lifestyle plus physically not active bcs i have a desk job and rarely exercise. I spent most of my time sitting. My resting heart rate right now is 96-108.
    Right now I’m just starting to change my lifestyle and will do 30 mins cycling daily and other exercise to build muscle. Let’s see how it goes after few weeks and months.
    From what I know, you can only lower the resting heart rate gradually so it will take some times until I can see the result.

  • was wondering too if you could do a episode on why muscle all of a sudden turns to fat and one has a hard time getting those muscles back? I am suffering with this badly and it is very depressing

  • The people who disliked this video are the people who’s eyes were filled with tears that they couldn’t see which button they were pressing.