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When stress and anxiety, a person usually develops a rapid heartbeat with severe dizziness, and scientists explained that it is related to a specific hormone secreted when stress, according to what the website mentioned. health The cardiovascular system circulates blood throughout the body in order to provide oxygen and other nutrients and eliminate waste products.
Each time the heart beats, it pumps blood from the heart to the body to supply oxygen to the working muscles or the lungs to return oxygen. in a quiet area for at least five minutes), the resting heart rate is measured.
A normal resting heart rate is between 60-100 beats per minute (beats per minute), and resting rates greater than 100 beats per minute indicate that the heart is working too hard to circulate blood, and therefore may indicate a serious problem that should be monitored by the doctor.
What controls the heart rate?
Heart rate is controlled by two branches of the autonomic (autonomic) nervous system: the sympathetic nervous system. (SNS) and parasympathetic nervous system (PN) activates the sympathetic nervous system (SNS) Hormones (catecholamines – epinephrine and norepinephrine) to speed up the heart rate, and trigger the parasympathetic nervous system (PNS) The hormone acetylcholine to slow the heart rate.
Factors such as stress, caffeine, and excitement may temporarily speed up the heart rate, while meditation or slow, deep breathing may help slow the heart rate.
Exercising for any length will cause your heart rate to increase and it will remain elevated as long as the exercise continues. At the beginning of the exercise, your body removes parasympathetic stimulation, which enables your heart rate to increase gradually. Larger.
Regular participation in cardiovascular exercise over a long period of time can reduce resting heart rate by increasing heart size, force of contraction, and length of time the heart is filled with blood. Decreased sympathetic nervous system activity.
High heart rates may be indicative of poor heart function and higher than normal stress on the heart’s ability to circulate. This may also indicate heart disease.
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