OUR HEART RATES are often the first port of call to be checked when we are unwell, with indications of illnesses like fever or your fitness levels. But what should your exercising heart rate be?

The heart rate of hummingbirds can be incredibly rapid, ranging from around 200 to 1200 beats per minute. A human heart rate, in comparison, ranges from around 60 to 100 beats every minute. The ...

"One of these zones is the fat-burning zone, which is achieved at a lower heart rate with the goal being to stay there for a longer duration of time, such as 30 to 60 minutes," Corey said. This is ...

After several weeks, not only had the mouse’s heart been fully rebuilt with the human cells, it was also beating again entirely on its own at a rate of 40 to 50 beats per minute.

Fitibit's wristbands have collected 150 billion hours' worth of heart-rate data from people around the world. For the first time, the company offered a look inside that data, to see how lifestyle ...

During exercise, the artificial heart’s ventricles can fill with 30% more blood to accommodate the body’s greater movement. Shepherd says his heart rate with the artificial heart is 135 beats ...