I think it's because an elephant's heart is alot larger than a man's, weighing 12- 28kg, so it has more power to every pump. a human heart only weighs 8 - 12 ounces (which is around 0.283....kg). Not completely sure that's correct, but its the only answer i can come up with.
Hope this helps ;)
Frog's internal body temperature is lower than that of a mammal lower temperature = slower heart rate
Well basicly because the elephant has no preditors so elephants are usually calm and so have a low heart rate,but a rat has to be fast and have faster reactions and so they have a faster heart rate.
they have a lower heart rate. younger people have a higher heart rate
On average, a heart rate of less than 120/80 mm Hg is considered optimal. If your heart rate is significantly lower than this, such as the lowest of 85/55, contact your physician immediately.
A person with a resting heart rate higher than 70 BPM is at a greater risk for Heart disease.
A resting heart rate of 56 is only slightly outside normal range of 60 to 80. Men tend to have lower resting heart rate than women. If one is athletic, then it tends to be lower also. If 56 is a sudden change from your normal without being athletic, then a medical visit may be prudent. There are a number of medical conditions which can cause a lower heart rate.
because
Heart rate goes up anytime a person engages in aerobic exercise. An athlete who regularly runs, by participating in track and field for example, would have a lower resting heart rate than nonathletes.
You can maintain your desired heart rate by wearing a heart rate monitor. These are small electronic devices that usually resemble a wrist watch. The heart rate monitor will display your current heart rate and allow you the opportunity to either speed up or slow down your running pace in order to stay within what your desired heart rate is. If you notice your heart rate is getting higher than desired, slow down, and if it is lower than desired, speed up.
Heart rate of men is lower than women because size of the heart in men is 25% larger than in women. Larger heart can pump more blood than smaller heart in one beat. Another reason of low heart rate in men than women is capacity of lungs in men is 25-30% higher than women. These are 2 reason of low heart rate or pulse rate in men than women.
i think it is because when the heart is relaxed it does not demand that much oxygen and the blood is pumped slower. The heart rate after excercising is higher than the standing heart rate because the heart demands more oxygen to carry out the excercise and the blood is pumped faster throughout the body to both the lungs and heart because it needs more oxygen and in order to prevent an oxygen debt.
It is the proper function of the heart at rest with a rate lower than 50 beats per minute.