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Apple Watch alerts popular YouTuber to tachycardia caused by dehydration and stress

YouTuber Joel Telling is crediting Apple Watch with alerting him to an elevated heart rate. Telling says that his Apple Watch notified him that his heart rate had been over 120 beats-per-minute for more than 10 minutes, prompting him to seek medical attention.

Following the Apple Watch notification, Telling went to the emergency room, where doctors determined he was suffering from tachycardia. Mayo Clinic describes tachycardia as your heart beating faster than it should while resting. It’s normal for your heart rate to rise during exercise or stress, but tachycardia is when that happens during rest.

According to Telling, doctors ran a series of tests that showed no pulmonary embolism or irregular heart rate activity. The most likely cause of the tachycardia, Telling says, was “stress and dehydration from recent travel.” He was given fluids at the hospital, and his heart rate subsequently returned to normal levels.

In Telling’s situation, his Apple Watch alerted him to an elevated heart rate that was easily treated and without any long-term effects. Thanks to Apple Watch, he was able to seek prompt emergency care, which underscores just how powerful the device’s passive health monitoring features are. The Mayo Clinic emphasizes that tachycardia can lead to heart failure, stroke, or even death.

Apple Watch allows you to set a “High Heart Rate” notification threshold. When you do this, your Apple Watch will send a push notification when it detects a heart rate above that threshold during a period of 10 minutes of inactivity. Here’s how to customize your high and low heart rate alerts for Apple Watch:

  1. On your iPhone, open the Apple Watch app.
  2. Tap the My Watch tab, then tap Heart.
  3. Tap High Heart Rate, then choose a BPM.
  4. Tap Low Heart Rate, then choose a BPM.

Telling runs a popular YouTube channel where he’s known as the “3D Printing Nerd.” Check out more Apple Watch health stories in our full guide here.

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Avatar for Chance Miller Chance Miller

Chance is an editor for the entire 9to5 network and covers the latest Apple news for 9to5Mac.

Tips, questions, typos to chance@9to5mac.com