Make a conclusion about the work of your own heart at rest and under stress.

Make a conclusion about the work of your own heart at rest and under stress. Why did my heart rate increase after exercise?

In a calm state, when a person does nothing, the heart beats at a frequency of about 75 beats per minute. If you run, do complex exercises, etc., then the frequency of beats per minute will increase to 130 beats. This is due to the fact that during physical exertion, our tissues and cells need more oxygen, since oxygen is quickly consumed. For this, the accelerated work of the heart begins. Blood is pumped faster and carries correspondingly more oxygen molecules per unit of time in this state.