The Apple AirPods 3 could come with a nifty new feature for fitness fans, according to a paper discovered on the Apple Machine Learning Research website by My Healthy Apple.

Apple’s researchers found that “wearable headphones” could pick up the sound of participants’ breathing using the devices’ built-in microphones.

As well as allowing AirPods users to track their respiratory rate during exercise, the paper suggests that this feature could be a “cost-effective method of tracking disease progression and cardio-respiratory fitness over time” – without the need for obvious medical monitoring equipment.
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