The smartwatch's Blood Oxygen app lets you measure the oxygen level of your blood on-demand. It's been MIA for more than a ...

Take our interactive quiz to find out how much you know about wearable devices, health apps, and personal health tracking.

For accurate readings, check your blood pressure twice a day, take five minutes to relax, and make sure you're following your monitor's directions.

A peak flow meter is a handheld device that measures airflow rate and can help those with respiratory conditions like asthma ...

A new Apple Watch feature passively analyzes optical heart sensor data during waking hours to flag 'possible hypertension' ...

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