Heart rate is one of the most important indicators of the body's health, which can show the general state of the heart and circulatory system. The resting heart rate varies depending on age, physical activity level, physical health, and even the mental state of people. Knowing the normal heart rate range at different ages helps us to recognize abnormal changes faster. Age... These changes are influenced by factors such as age, physical activity level, general health, and even mental conditions. In general, resting heart rate for different age groups. as follows: **Fetus (in mother's womb)** - **Number of heartbeats:** 110 to 160 beats per minute - **Description:** Fetal heart rate can be recognized from the sixth week of pregnancy and increases rapidly.... In the second and third trimester, it usually remains between 120 and 160.... A heart rate less than 110 or more than 160 may require a medical examination.... ** Babies (0 to 1 year)** - **Heart rate:** 100 to 160 beats per minute - **Description:** Babies have a fast heart rate due to their high metabolism and the body's greater need for oxygen.... When crying or moving, it is normal for the heart rate to increase.... **Toddler children (1 to 3 years)** - **Number of heartbeats:** 90 to 150 beats per minute - **Explanation:** With the gradual growth of the body and nervous system, the heart rate decreases compared to the baby, but it is still high.... **Children (4 to 10 years)** - **Number of heartbeats:** 70 to 120 beats per minute - **Explanation:** At this age, the heart rate gradually becomes slower and more regular.... Excitement or play causes a temporary increase in the rate.... **Adolescents (10-18 years old)** Heart rate: 60-100 beats per minute - At this age, the heart rate approaches the heart rate of adults..... **Adults (18-65 years old)** Heart rate: 60-100 beats per minute - In healthy adults, the heart rate is normal in this range.. People who have a high fitness level may have a lower heart rate.... **Elderly people (over 65 years old)** Heart rate: 60-100 beats per minute - In older age, the number of heartbeats may decrease due to the decrease in the ability of the heart to pump blood normally.. **Notes** - **Resting heart rate**: **Resting heart rate** (when a person is resting) is the most important indicator of heart health... - **Exercise and physical activity**: Physical activities can increase the heart rate.... Athletes usually have a lower resting heart rate... Table of normal heart rates for different ages ### Normal heartbeat In general, the normal heart rate at rest is between **60 and 100 beats per minute**... but this range changes depending on the age of people, and in children and infants it beats faster than adults due to higher metabolism... Fetal heart rate table in different months of pregnancy (approximate) From a scientific and medical point of view, there is no significant difference between the heart rate of a female and a male fetus... The heart rate of the fetus depends more on factors such as the gestational age, the health of the fetus, the physical condition of the mother, and the environmental conditions rather than gender... Of course, old beliefs and legends sometimes say: - A heart rate above 140 per minute is a sign of a girl - A heart rate below 140 is a sign of a boy But these theories do not have a solid scientific basis and cannot be used as an accurate method to determine gender. A sudden increase in heart rate (tachycardia) can have various reasons, some of the most important of which are: - **Severe stress and anxiety:** Fear, worry or panic attacks can cause a rapid increase in heart rate... - **Severe physical activity:** Exercise or heavy physical activity causes a normal increase in heart rate.... - **Caffeine or stimulants:** Caffeinated drinks, nicotine or some drugs may increase the heart rate.... - **Fever and infection:** An increase in body temperature due to illness can increase the heart rate.... - **Heart problems: It can be heart failure, cardiac architis....- **Anemia:** Decrease in the level of red blood cells makes the heart work faster so that enough oxygen reaches the tissues....- **Hormonal disorders:** Such as hyperthyroidism that increases the body's metabolism....- **Drugs:** Some prescribed or arbitrary drugs can increase the heart rate... Increase... Summary.... The normal heart rate varies at different ages from the fetal period to old age, and knowing these ranges can help to quickly diagnose possible problems. To maintain heart health, it is very important to have regular physical activity, follow a healthy lifestyle and have periodic checkups. In case of abnormal changes in heart rate, it is necessary to see a cardiologist. Serious complications