Christopher Kelly M.D.

<p>If thats not quite ready for prime time, surely the heart rate data being collected by all those other fitness trackers on the market is still helpful, right? </p>

<p>Maybe not so much. If youve been ignoring the heart rate data your watch feeds you, feel free to continue. </p>

<p>Heart rate tracking has become so common not because the data are particularly valuable, but because the technology is inexpensive and straightforward. Im a cardiologist with a second-generation Apple Watch, and Ive probably checked my data a total of four times in as many years. </p>

<p>There are, however, a few scenarios when tracking your heart rate could be useful.</p>

<h1>  When should you track your heart rate?  </h1>

<p>If youre an endurance athlete (or youre striving to become one), tracking and <a href="https://www.menshealth.com/fitness/a19871099/heart-rate-training-workouts/" id="27e74b84-34e9-36d9-a326-435cee9b1bde">  targeting the appropriate heart rate during exercise </a> can help maximize your aerobic fitness. For the remaining majority of us, a more realistic goal is simply to exercise hard enough to break a sweat for at least 150 total minutes per week, ideally divided into three or four sessions.</p>

<p>Meanwhile, if youve been experiencing palpitations, intermittent lightheadedness, or youve actually passed out, it could be a sign your heart rate is periodically falling too low or surging too high. Both scenarios can make your blood pressure drop and your brain get woozy. In addition, palpitations (forceful or fast heart beats) can also be a sign of an abnormal heart rate thats worth getting checked out. </p>

<p>To investigate, you can check your heart rate while youre experiencing symptoms. You can also scroll through your heart rate record, looking for any major deviations from the norm. Although a normal rate is defined as 60 to 100 beats per minute, most people dont have symptoms unless their rate goes below 45 or above 130. Also, dont forget that its normal for your heart rate to increase during exercise, so you only need to worry-and call your doctor-about elevated values that occur at rest.</p>

<h1>  Can smart devices track any other useful health parameters?  </h1>

<p>Some new types of wearables hold real promise for your health, for instance: </p>

<ul><li> A smartwatch that tracks blood pressure. The Omron <a href="https://omronhealthcare.com/products/heartguide-wearable-blood-pressure-monitor-bp8000m/">wearable blood pressure monitor</a> may be extremely helpful for people with hypertension. The blood pressure measurements obtained at a doctors office are often artificially high, likely because of anxiety and stress. Wearing a monitor around the clock may provide a more accurate estimation of your blood pressure and allow for more precise medication adjustments. Many people may discover their blood pressure is better than they thought, and can cut down on their pressure-lowering medications. </li><li> A new device that continuously measures blood sugar. Thats great news for people with type 1 diabetes, and some companies are marketing these devices even to healthy adults without diabetes. The pitch is that tracking blood sugar will reveal the immediate impact of dietary choices on your personal metabolism, [so you can] discover which foods and drinks have the best results for you. Its unclear, however, if having this information will actually change eating habits, since most people already ignore other, equally-helpful and readily-available information like calorie counts. </li></ul>

What to Do With Your Watch's Heart Rate Data

By now, many a cardiologist has explained why they dont love the atrial fibrillation feature of the Apple smartwatch-it generates too many false alarms, too much anxiety, and its not clear how often it doesnt detect the problem.

What Am I Supposed to Do With My Smartwatch's Heart Rate Data?

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Christopher Kelly M.D.

Articles written by the author

What Am I Supposed to Do With My Smartwatch's Heart Rate Data?