Watching these two Apple Watch series 4 video tutorials could save users' lives

Last month, Apple released five mini video tutorials showing Apple Watch series 4 owners how to use their timepiece for certain features. For example, one video explained how a user can set the Apple Watch to alert him when he reaches a preset goal for a run. The user can decide to run until he burns a specific amount of calories, runs for a certain time period, or reaches a preset distance. Other mini video tutorials released by Apple that day showed Apple Watch series 4 users how to view their past activities on the device, how to change their "Move" goal, how to change the bands on the wearable, and how to access Siri using the watch.

Today, a pair of new videos related to the Apple Watch series 4 surfaced. The first one explains how to turn on Fall Detection using the smartwatch. With this feature enabled, an Apple Watch series 4 owner who falls hard will feel a tapping from the watch while an alarm is sounded to alert anyone nearby. If the device detects that the person wearing the watch is moving, it will wait for the injured party to choose one of two options on the screen: call emergency services, or dismiss the alert. If the watch determines that the injured person is not moving, after one minute it will automatically call emergency services.

To turn on Fall Detection, open the Apple Watch app on your iPhone and tap on Emergency SOS. Look for the toggles switch next to Fall Detection, and turn the feature on. You never know when this might come in handy.

The second Apple Watch series 4 mini video tutorial released by Apple today deals with a feature that has saved the lives of many Apple Watch users over the years. That would be the device's heart rate monitor. In addition to tracking how fast an Apple Watch wearer's heart beats, the series 4 version of the smartwatch features an electrocardiogram (ECG) that can notify a user when his heart has an abnormal rhythm. This could be an early warning sign of atrial fibrillation (AFib), which can cause blood clots, strokes, heart failure, and other serious conditions.

To turn on the ECG monitor and the heart rate monitor on the Apple Watch series 4, open the Watch app on the iPhone. Scroll down to "Heart," and tap on it. Users can toggle on the irregular rhythm notifications and the high and low heart rate notifications.