Many arrhythmias have no clear cause; these idiopathic cases arise without identifiable triggers, while for others, the causes may be congenital or acquired.

Understanding your heart rate is crucial for more than just reaching optimal fitness–it can also help to reduce injury and ...

Adults whose resting heart rate follows an atypical pattern as they age may face a greater risk for developing heart failure or dying from any cause than people whose heart rates follow a normal ...

September 27, 2011 (Cleveland, Ohio) — A simple exercise program tailored to the patient's functional limits can improve the survival prognosis for patients with abnormal heart-rate recovery (HRR), ...

Respiratory rate, another metric in the Apple Watch vitals app, shows how many breaths you take per minute. This typically ...

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Smartwatches didn't launch with the first Apple Watch in 2015. The Seiko Ruputer—introduced in 1998—is generally considered the first of its kind. However, today's devices are truly next-level ...

If you’re waking up tired even after seven or eight hours of sleep, your heart rate may be falling too far during the night.

An estimated 4.2 million people die within 30 days of surgery worldwide each year. A new study, published in the European ...