It’s true sir, i have got this question too
To hear heart rate............
Answer:
The autonomic nervous system
Explanation:
The autonomic nervous system is control mechanism that operates mainly unconciously and governs body functions like heart rate, digestion, pupil response, urination, sexual excitement, and respiratory rate.
Autonomic functions require respiratory control, cardiovascular control, vasomotor activity and some reflex behaviors like coughing, swallowing, vomiting and sneezing
Just calm yourself down when you are emotionally distressed
