“Here is my hand-picked list of the best ECG smartwatches and devices for 2022. Read the complete review to choose the best ECG monitoring devices trusted by many.”
(Updated on November 2022)According to the CDC, 6,55,000 Americans die every year due to cardiac diseases, which means that one person dies every 36 seconds due to cardiac diseases in the USA.

ECG or Electrocardiogram is a life-saving feature added to the latest smartwatches. It can detect irregular heart rate and atrial fibrillation (abnormal rhythm), which can be the initial signs of heart failure, stroke, or other cardiac complications.
But just having a device like an ECG smartwatch may not help you because accuracy matters a lot here. If you want to have a closer look at your cardiac health (heart health), you must have one of the best ECG smartwatches clinically validated by the authorities like the U.S. Food and Drug Administration.
Today in this article, I have listed the best FDA Approved ECG Smartwatches in 2022. I hope this will help you to choose the best ECG monitoring smartwatch.
What is Electrocardiogram (ECG or EKG)?

Electrocardiogram, or ECG for short, is a medical test that detects your heart’s electrical impulses. This helps doctors diagnose any cardiac issues you may be experiencing. A 12 lead ECG is often used in hospitals, and it can detect potential problems with your heart rate, rhythm, conduction, and repolarization.
How does it work?
Our heart pumps blood as a result of electrical activity occurring within the heart. A small amount of this electrical impulse is being sent to the skin as well. An ECG Machine/device can detect, measure, and interpret this electrical activity with the help of electrodes attached to the body.
There will be some variations in the heart rhythm in case of heart disease, and a doctor can easily detect it from the ECG.
Hospitals use advanced ECG machines to take 12-lead ECG, and it can detect severe heart conditions like cardiac arrest, heart failure, etc. A standard EKG machine has ten electrodes. Six electrodes are attached to the chest, and the other four electrodes are attached to each limb to take an Electrocardiogram.
Why should you buy an ECG Smartwatch?
ECG Smartwatches come with advanced PPG sensors to measure and analyze your cardiac activity. Even though it cannot give you as many details as a 12-lead ECG, it can give you some valuable insight into your heart health. However, it can still detect Atrial Fibrillation and irregular heart rhythms, which could be early signs of cardiac arrest or stroke.
Advanced ECG smartwatches can take ECG or EKG readings within 30 seconds and alert you in case of atrial fibrillation.
These are the expected ECG results that you can get on a smartwatch.
Sinus Rhythm: A sinus rhythm means that your heart is working normally.
Atrial Fibrillation: Atrial Fibrillation is an abnormal heart rhythm, and it can lead to a heart attack, blood clots, stroke, etc., if not treated on time. If your ECG watch alerts you with atrial fibrillation, immediately call the emergency service for medical help.
Inconclusive: It means that your smartwatch cannot detect your heart rhythm due to multiple reasons such as elevated or decreased heartbeats, presence of a pacemaker, ICD (Chest Tube), etc.
Accuracy of an ECG Smartwatch
There are many ECG tracking smartwatches available in the market today. But how to choose the right smartwatch? This is a common question asked by many. When you buy an ECG smartwatch, you should always go for a smartwatch approved by the FDA. ECG Smartwatches from Apple, Samsung, and Fitbit are clinically validated by the FDA, and it is accurate in recording your ECG.
Cardiologists also agree that the ECG smartwatches help them to monitor the heart health of their patients.
10 Best ECG Smartwatches and Devices in 2022
Here is my top pick as the best smartwatch with ECG in 2022. I will be regularly updating this article with the latest ECG monitoring watches.
- Apple Watch Series 6
- Apple Watch Series 7
- Samsung Galaxy Watch 3
- Samsung Galaxy Watch 4
- Apple Watch Series 5
- Fitbit Sense
- Samsung Galaxy Watch Active 2
- Withings ScanWatch
- AliveCor KardiaMobile Personal EKG
- Fitbit Charge 5
Apple Watch 6: Best ECG Smartwatch for Apple Phone

Apple Watch Series 6 is one of the best ECG smartwatches for iPhone users in 2022. It also has many other vital health monitoring features such as heart rate monitoring, blood oxygen level monitoring (SpO2), fall detection, Emergency SOS, etc.
ECG Tracking Feature
It measures and analyses ECG with its FDA Approved ECG App, and two advanced heart rate sensors called electrical heart rate sensor and 3rd generation optical heart sensor.
How to take ECG on Apple Watch Series 6?
As it does not have any wires or cables, you can take ECG conveniently by sitting anywhere. For improved accuracy, make sure you sit in a calm and quiet place and follow the instructions below.
- Wear your Apple watch comfortably on the wrist (preferably on the left hand)
- Open ECG App on your Apple Watch
- Now hold your finger on the digital crown for 30 seconds (you can see a 30-sec count down on display.
- After 30 seconds, it will show you the result on display.
After ECG, the possible results are as follows:
- Sinus Rhythm
- Atrial Fibrillation (A Fib): If it shows atrial fibrillation, you should contact your doctor immediately.
- Low or high heart rate: Contact your doctor
- Inconclusive
You can see more details about Apple ECG here.
Once the ECG is taken, you can head towards Apple Health App to download and share your ECG as a PDF file with your doctor.
You can also enable irregular heart rate alerts on your Apple Watch. Once this feature is activated, it regularly checks your heart rate for any irregular heart rhythm and alerts you in the case of an abnormal heart rhythm.
If you are not feeling well, your Apple Watch can automatically call emergency service right from your wrist along with your location so that the Emergency personnel can reach your current location.
Fall detection is another excellent feature (life-saving feature) in Apple Watch Series 6. In case of a hard fall, it automatically activates an alarm. If you do not move or respond to the alarm, it will automatically call the local Emergency service and share your location with them.
Other Features
- Durable and premium design
- Blood oxygen level monitoring (SpO2)
- Sleep monitoring
- Waterproof up to 50 meters
- Built-in GPS
- Always on retina display
- Apple Fitness+ support (free for 3 months)
- Multiple watch faces.
Our Verdict
Apple Watch Series 6 is the most advanced smartwatch for Apple Phone users. The upgraded software and hardware make it superior to its predecessors, such as Apple Watch Series 5 and 4. The SpO2 feature is also incorporated in Apple Watch Series 6, which is unavailable in other Apple Watches.
In a nutshell, if you are looking for an advanced Apple watch with health, fitness, and smart features, Apple Watch Series 6 is the best choice for you.
Apple Watch Series 7

The Apple Watch Series 7 has an FDA Approved ECG App and ECG Sensor capable of detecting Atrial Fibrillation. The ECG tracking feature in this latest Apple Watch is similar to that of previous Apple watches.
It also features a SpO2 sensor for blood oxygen level monitoring and a Fall Detection feature. These features are handy for sporty people and individuals that live an active lifestyle.
In addition, the Apple Watch Series 7 comes with a water resistance of 50 meters. It also includes a built-in GPS so you can track your runs without depending too much on your phone.
The Apple Watch Series 7 has a tougher design than the previous Apple Watch models. It is also more compact, lighter, and thinner than previous models.
There is no improvement in battery life, but now the battery charges 33% faster than the Series 6.
Other Features
- Premium rugged design
- Irregular heart rate alerts
- Sleep tracking
- Blood oxygen level monitoring
- The improved electric cycle tracking feature
- Always on-retina display
Our Verdict
Apple Watch Series 7 is one of the best smartwatch ECG and SpO2. However, if you already own an Apple Watch Series 6, it is not worth getting the Apple Watch Series 7. But when it comes to overall built quality, the Apple Watch Series 7 is tough to beat.
Samsung Galaxy Watch 3: Best Smartwatch with ECG for Android

Samsung Galaxy Watch 3 is a perfect alternative for Apple Watch Series 6 for Android phone users. In addition to FDA Approved ECG app, it has many other health tracking features such as blood oxygen (SpO2), B.P. monitoring, calorie tracking, advanced sleep monitoring, and much more. Like Apple Watch, it can also detect heart problems such as atrial fibrillation, irregular heartbeats, and increased or decrease heart rate.
ECG Tracking Feature
In the early days, the ECG tracking feature was only available to Apple watch users only. The Samsung Galaxy Watch 3 and Active 2 were the first fitness watch that comes with an FDA-approved ECG App for Android devices.
How to take an ECG with Samsung Galaxy Watch 3?
Now Galaxy Watch 3 comes with the Samsung Health Monitor app preinstalled on it. If it is not available on your smartwatch, you can download it from the Galaxy Apps store. Once Samsung Health App is installed on your device, you are ready to take an ECG.
Follow the steps below to take an ECG reading.
- Sit in a calm and quiet place.
- Avoid any exercise for at least 5-10 minutes before taking an ECG.
- Wear Galaxy Watch 3 on your wrist and keep your hands on the table
- Open Samsung Health Monitor App
- Now gently touch on the top button on the smartwatch’s right-hand side (if you are wearing on the left hand).
- You should keep the finger there for 30 seconds (the watch will display a countdown)
- After 30 seconds, the device will display your ECG result.
The expected ECG results are as follows.
- Sinus Rhythm: Normal ECG
- Atrial Fibrillation: It means that your heart rhythm is abnormal, and you should immediately contact your doctor.
- Inconclusive: It means that your smartwatch is unable to detect your heart rhythm. In this case, also, you should consult your doctor as soon as possible.
You can read more about the Samsung Smartwatch ECG feature here.
The blood pressure monitoring and SpO2 features are other excellent features in this smartwatch. All these health and activity tracking features make this device one of the best health tracking smartwatches in 2022.
Fall detection and emergency SOS are also available in this EKG Smartwatch for android devices. In case of a hard fall, the smartwatch detects that and sends an SOS message to your emergency number along with your location.
When it comes to design, the Galaxy Watch 3 looks like its predecessor Galaxy Watch. The latest Galaxy Watch3 also inherited its traditional hybrid look and its rotating bezels.
Here is a complete guide on how to set up fall detection on Galaxy Watch3.
Other Features of Galaxy Watch3
- Beautiful design
- Beautiful rotating bezel
- It tracks your sleep patterns.
- Calorie tracking
- Waterproof up to 50 meters
- In-board music storage
- On-board GPS
- The battery life is 24 hours on a single recharge.
- Allow you to make calls and SMS directly from the smartwatch without a phone(LTE Model)
- Automatic activity detection
Now let us have a look at a few pros and cons of this Smartwatch.
Our Verdict
Samsung Galaxy Watch3 is the best ECG smartwatch for android devices that comes with many health and wellness tracking features. Samsung Galaxy Watch3 is our top recommendation as the best FDA Approved ECG watch for Android users.
Samsung Galaxy Watch 4: Upgraded Version of Galaxy Watch 3

Samsung Galaxy Watch 4 was designed to give its users more convenience and freedom with a built-in ECG sensor that can take 30-second ECG readings at any time. It can help you monitor the health state of your heart and check atrial fibrillation anytime, anywhere.
Once the ECG is taken, you can then share it with your doctor for further examination. Even if it cannot be used as a medical device, it can still be used for wellness purposes to monitor your heart activity and perform ECG tests at home.
This smartwatch is equipped with other health-tracking features as well. It can track your daily activities like distance traveled, steps taken, workout time, and heart rate; it gives you personalized coaching plans based on your fitness data.
The new BioActive Sensor on the Galaxy Watch 4 tracks your body composition, unlike its predecessor. It is a helpful feature for people trying to lose weight and those who want to check their overall health condition.
How to take an ECG On New Samsung Galaxy Watch 4
As mentioned earlier, it takes only 30 seconds to take a complete ECG. The process to take an ECG on Galaxy Watch 4 is similar to that of Galaxy Watch 3. Just sit down and relax before taking a reading.
Other Features of Samsung Galaxy Watch 4
- Attractive design
- Blood Pressure monitoring
- SpO2 and VO2 Max
- Sleep Tracking
- IP 68 Waterproof ratings
- Calorie tracking
- Built-in GPS
- More than 90 Activity modes
- Automatic activity detection
- Compatible with various third-party apps
Our Verdict
Galaxy Watch 4 is the best smartwatch you can have if you are looking for a wearable device with health-tracking features. However, having the ability to take an ECG easily is not the only reason you would want to buy this watch. If your budget allows, get this watch to enjoy and experience its ECG reading feature as well.
Apple Watch Series 5: Top Pick ECG Smartwatch

Apple Watch Series 5 is another best ECG watch in 2022. Like Apple Watch Series 6, it is also packed with health tracking features such as heart rate, fall detection, sleep tracking, stress monitoring, etc.
ECG Tracking Feature
The Apple Watch Series 5 comes with an ECG App/sensors approved by the FDA. It can detect irregular rhythm, atrial fibrillation, and also abnormal heartbeats. Once the irregular heartbeat monitoring feature is activated, it alerts you in case of any abnormal heart rate so that you can seek medical help immediately.
How to Take ECG on Apple Watch Series 5
The methods to take ECG on every Apple ECG device are the same. However, the latest models like Apple Watch Series 6 and Apple watch 5 have the newest technology to record ECG than its predecessor Apple Watch 4. Follow the steps below to take ECG on Apple Watch 5.
- Relax and sit in a calm and quiet place
- Open ECG App
- Keep your finger on the watch crown for 30 seconds.
- You will get ECG results on your smartwatch screen after 30 seconds.
The possible results are the same as we discussed earlier in the Apple Watch 6. Like Series 6, it also allows you to share your ECG with your doctor for review.
The advanced accelerometer in Apple Watch 5 can detect a hard fall like Apple Watch 6. In case of a fall, it automatically calls the emergency department for help. If you are okay after a fall, you can deactivate it.
However, it does not have a blood oxygen level monitoring (SpO2) feature. If you want to have all these features, you have to spend a few more bucks for Series 6.
Other Features of Apple Watch 5
- Premium design
- Sleep monitoring
- It monitors you for abnormal heart rhythms.
- Waterproof up to 50 meters
- Incident detection and Emergency SOS
- Always on Retina display
- The battery life of 18 hours
- Dual heart rate sensor
- Built-in Navigation and compass
- International Emergency Calling feature
- Waterproof up to 50 meters
The Apple watch is constantly monitoring your heart rate and rhythm. If your heart rate is above or below the normal limit, it alerts you with the notification. Similarly, the Apple watch’s irregular rhythm notification feature frequently looks for your heartbeat and notifies you in case of any irregularities in heart rhythm. It is an important feature as it might be an early sign of atrial fibrillation.
Our Verdict
Apple Watch 5 is the predecessor to Apple Watch 6. It has almost the same features and specs as Series 6. However, it lacks SpO2. If you are an Apple watch user and do not want to spend money on Series 6, this device is best for you.
Fitbit Sense: Best Alternative for Apple Watch Series 6

Fitbit Sense is one of the most advanced health-tracking smartwatches ever made by Fitbit. The Fitbit Sense comes with an ECG App clinically validated by the FDA.
ECG Features in Fitbit Sense
The Fitbit Sense allows you to take ECG anywhere and anytime in 30 seconds. It can detect atrial fibrillation and irregular heart rate like the Apple watches.
How to take ECG on Fitbit Sense?
The Fitbit Sense uses electrical sensors behind the watch and a metal case to take an ECG. Here are the simple steps to take an ECG on this wearable device.
- Wear your smartwatch comfortably on your wrist (not too loose or too tight)
- Sit on a chair in a calm place.
- Open EKG App on the smartwatch
- Since Fitbit Sense does not have a digital crown, you must hold the smartwatch with your index finger and thumb, as shown in the video below.
- Wait for 30 seconds. You can see a countdown on display.
- After 30 seconds, it will display your heart rhythm on the screen.
You can download your ECG report in PDF format from the Fitbit App, and you can share it with your doctor for review. You can also view and download the past results from the Fitbit App.
The possible ECG result in Fitbit sense is the same as follows.
- Sinus Rhythm
- Atrial Fibrillation (A Fib)
- Inconclusive
The Fitbit Sense also gives the same results as the Apple watch wearable devices.
Please note that the ECG taken by an ECG /EKG watch does not replace any medical advice. You should not change the medication based on ECG taken on a wearable ECG monitor.
It can also track your sleep, SpO2, stress, breathing, heart rate variability, etc., right from your wrist. Because of this reason, you can always have a closer look at your physical and mental health with the help of Fitbit Sense.
Other Features of Fitbit Sense
- Beautiful unisex design
- Resting heartbeat monitoring
- Female health tracking
- Sleep monitoring
- 20+ goal-based activity tracking(Both indoor and outdoor)
- Automatic activity detection
- The battery life of more than six days on a single recharge
- Water resistance of up to 50 meters.
Our Verdict
Fitbit Sense is also an FDA-certified smartwatch that comes with ECG sensors. The skin temperature monitoring feature makes this smartwatch superior to other watches. Temperature monitoring is beneficial in detecting early signs of COVID-19 and flue-like diseases.
Samsung Galaxy Watch Active 2: Best Premium watch for Android

The Samsung Galaxy Watch Active 2 is another FDA Approved ECG Smartwatch. It has an entirely different design than the Galaxy Watch3.
ECG Tracking Feature
Samsung released the ECG tracking feature almost simultaneously for Galaxy Watch Active2 and Watch3. Both the devices are using similar technologies for ECG recording. As a result, you can expect an accurate ECG reading in this device as well.
Besides ECG monitoring, it also has blood oxygen and blood pressure monitoring feature, but the FDA does not yet approve it. Still, you can expect an accurate reading of your SpO2 and B.P.
How to measure ECG in Samsung Galaxy Watch Active 2
To take an ECG without error, you should not do any physical exertion for at least 10 minutes before taking an ECG. After finding a calm and quiet environment, follow the steps below.
- Sit on a chair by keeping your hands on the table.
- Open the ECG/EKG app
- Now gently touch the button on the right-hand side of the watch (Upper button)
- Continue touching on the button for 30 seconds (Check on-screen count down)
After 30 seconds, the device will display the ECG result on the screen. The possible results are the same as explained earlier for Samsung Galaxy Watch3. After taking ECG, you can send it to your doctor or health care professionals for a closer look into it.
In addition to ECG, B.P. monitoring, and SpO2, it also offers many other important health tracking features such as sleep tracking, calorie tracking, and much more. If you go for Galaxy Watch Active2, you can get almost every feature of Galaxy Watch3 at a lesser price.
Other Features
- It has a non-bulky and attractive design.
- Digital Bezel: It comes with a digital bezel, unlike a metal bezel in Galaxy Watch and Galaxy Watch3
- Comfortable to wear
- Sleep: It can give you in-depth and valuable insights into your sleep data.
- Fall detection: It is the same as the incident detection feature in Galaxy Watch3
- Irregular heart rate notifications: It can detect irregular heartbeats and alert you with notifications.
- Stress tracking
- Built-in music storage and Spotify playlist download
- Smartphone notifications
- Allows you to make and receive phone calls without a smartphone (LTE model)
Our Verdict
Samsung Galaxy Watch Active2 can have a closer look at your overall health and wellness, especially heart health. The blood pressure monitoring and SpO2 monitoring make this smartwatch one of the best alternatives to the Apple Watch 6 and 5.
Withings ScanWatch: Best Hybrid Watch with ECG

Withings ScanWatch is a hybrid smartwatch with an FDA Approved ECG and SpO2. It is available in two variants: 38mm and 44 mm. The design of the Withings Scan Watch is very classy, and it doesn’t look like a smartwatch at all.
It allows you to take a quick ECG and alerts you if any irregular heartbeats such as atrial fibrillation are detected. It also allows you to send an ECG report to your doctor for a more detailed analysis.
Withings scan watch also tracks heart rate, sleep, and breathing disturbance status, but the heart rate monitoring accuracy is not as good as for advanced health-tracking smartwatches out there.
It also lacs a built-in GPS. Also, it does not fall detection feature as in Apple or Samsung watches. But you can use the connected GPS to track activity metrics.
Other Features
- Durable design
- 30 Sport modes
- Detects activities like walking, running, sleeping, and biking automatically
- 5 ATM water-resistance
- 30 days of battery life
Our Verdict
Withings Scan watch is perfect for those who like to wear a traditional timepiece with added health benefits! But don’t expect it to be a smartwatch that can do everything like an Apple or Fitbit.
AliveCor KardiaMobile Personal EKG: Best Portable ECG Monitor

AliveCor KardiaMobile is another FDA-approved portable ECG tracking device in 2022. As it has a smaller size, you can carry this device anywhere you go.
This tiny device can take 6-lead ECG, and it can give more details about your heart condition, including Arterial Fibrillation, normal heart rhythm, Tachycardia, and Bradycardia.
Taking an EKG in Alivecor KardiaMobile 6L is very easy. Here are the simple steps to take an ECG on this tiny device.
- Relax and sit on a chair.
- Open Kardia App on your phone. You can download the Kardia App from Google Play Store or Android Play store for free.
- Now keep your fingers on the designated area for 30 seconds to get your ECG (No frustrating jellies or multiple electrodes as with traditional ECG equipment)
- Done
You can send your ECG for a Cardiologist’s review from Alivecor itself. But it cost you a monthly fee of $9.99. But I do not think you require this service as this device allows you to share your ECG with your doctor by email from the app itself.
Our Verdict
If you are looking for a non-wearable portable EKG monitor, the AliveCor KardiaMobile 6L is the right choice for you. As it provides 6-lead ECG, it can provide more in-depth and accurate data about your heart health.
Fitbit Charge 5

Fitbit Charge 5 is the first activity tracker that comes with an FDA-approved ECG monitoring feature. If you don’t want to spend on a Fitbit Sense, then the Charge 5 is the best fitness tracker that comes with a wrist-based ECG Monitor.
In addition to ECG, this Fitbit ECG tracker also features an EDA sensor for stress monitoring. The Charge 5 also features a SpO2 sensor for Blood Oxygen monitoring.
Unfortunately, the ECG monitoring features in Fitbit Charge 5 are not available at the moment. However, Fitbit informed us that the ECG monitoring feature in Fitbit is expected to be launched this month.
Fitbit Charge 5 has a significant upgrade from its predecessor, Fitbit Charge 4. It features an AMOLED color display which is sharper and brighter than the grayscale display in Charge 4.
Other Features
- Advanced health tracking features
- Water-resistant up to 50 meters
- Built-in GPS
- Female health tracking features
- AMOLED color display
Our Verdict
Fitbit Charge 5 is an affordable FDA Approved smartwatch that you can buy now. It’s an excellent upgrade from the Fitbit Charge 4, adding several great health and fitness tracking features such as ECG.
Withing Nokia ECG Smartwatch

Withing Nokia is one of the best hybrid smartwatches with ECG in 2022. It uses the ECG sensors and Health Mate app to take and measure the ECG. It instantly analyses and suggests you contact the doctor in case of atrial fibrillation.
It allows you to take an ECG/EKG within 30 seconds just by keeping your fingers on the watch anywhere and anytime. Once the ECG is taken, you can share it with your cardiologist for a look.
The ECG tracking feature on this smartwatch is developed with the help and support of cardiologists from Centre Cardiologists Nord, Almaviva santé, etc. It is already available for sale in the EU. As it is not approved by the FDA, the Withing Nokia ECG Smartwatch won’t be available in the USA for now. Once it is clinically validated by the FDA, it will be available in the USA too.
In addition to health metrics, it also tracks more than 30 day-to-day activities like walking, running, swimming, etc. It is also waterproof up to 50 meters so that you can jump into the water up to 50 meters without any worries.
Unlike other smartwatches discussed here, Withing Nokia ECG Smartwatch comes with a removable battery that can last about one year. So, you do not need to charge the watch frequently.
Our Verdict
If you are looking for a cheap, clinically validated ECG Smartwatch under $150, the Withing Nokia ECG Smartwatch is the right smartwatch for you. However, it does not have other advanced health tracking features such as blood oxygen or temperature monitoring.
EKG smartwatches do not detect a cardiac arrest, or it does not replace any medical device. You must always follow the advice of your doctor for better health.
Final Verdict
All the ECG smartwatches discussed here can help you monitor your ECG at home. Even though it does not replace medical equipment or medical advice, it can alert you to some abnormal heart issues like an Afib and irregular heart rate.
If you are an iPhone user, then FDA Approved ECG wearable devices such as Apple Watch Series 6, Apple Watch Series 5, and Apple Watch Series 4 will be the right pick for you as it seamlessly connects with iPhones.
If you are an Android Smartphone user, Samsung Galaxy Watch 3, Samsung Galaxy Active 2, and Fitbit Sense would be great options. Galaxy Watch 4 is the latest smartwatch from Samsung and it also comes with more features than the Galaxy Watch 3.
AliveCor KardiaMobile Personal EKG and SonoHealth Portable EKG Heart Rate Monitor are also good if you’re planning to go with a portable ECG monitor.
I hope this has helped you choose the right wearable ECG device for you. If you need further assistance in selecting a wireless ECG monitor or have other queries, please feel free to comment below.
Disclaimer
It is to be noted that ECG/EKG smartwatches or monitors cannot and should not be used for medical usage. These devices only give you a bird’s eye view of your heart health