In 2012, a team of doctors published the curious case report of a man who temporarily had a heart rate of 600 beats per minute (bpm) – a full 300 beats faster than the theoretical limit of 300 bpm.

Middle-aged men with a resting heart rate of 75 beats per minute are twice as likely to die early and develop heart disease, scientists believe. In a study published in the journal Open Heart, ...

The fastest rate recorded was 37 beats per minute at the end of very deep dives as the whale recovered and reoxygenated its enormous body. Blue whales are the biggest animals on Earth, reaching ...

So for 35-year-olds, a goal target heart rate is between 93 and 157 bpm ... is between 60 and 100 beats per minute. The normal heart rate for children changes as they age.

"A heart rate higher than 100 beats per minute at rest is called tachycardia. It can happen due to stress, too much caffeine, or other health issues," Achrekar said. "A heart rate below 60 beats ...

According to Harvard Medical School, a normal resting heart rate is anywhere between 60 and 100 beats per minute. However, it reported that most healthy adults actually fall within 55 to 85 beats ...

A resting heart rate of 75 beats per minute in mid-life is linked to a doubling in the risk of an early death from all causes -- at least among men. Share: Facebook Twitter Pinterest LinkedIN Email.

They detected heart rates of just 2 to 8 beats per minute hundreds of times. Advertisement. Read more: Humpback whales use their flippers to swat salmon into their mouths.

Still, it's important to note that there are numerous exceptions to the 60-100 beats-per-minute rule and a "normal" pulse varies from person to person.

93% of maximum heart rate: 180 x 0.93 = 168 beats per minute. At the age of 40, an activity is vigorous if your heart rate stays between 139-168 beats per minute. Exercise Intensity During a Run.

For example, my resting heart rate is 58 beats per minute, based on the average that my Fitbit gives me. My max heart rate is 198 (I'm 22 years old, so I used 220 minus 22).