because they need a change in heart rate.
It goes up
yes
Slow tempo will decrease your heart rate because it might put you to sleep and that would rest your heart rate.
Does the amplitude of the heart and heart rate always change together
Every persons heartrate is different! Depending on your height and weight.
It decreases because your heart no longer has to work as hard.
Certain liquids can greatly affect a person's heart rate. Someone that drinks a lot of caffeine may notice an increased heart rate.
Your blood pressure can go up or down with each movie you watch and same with your heart rate
anxiety, stress, exercising, heart attack.
Yes, your heart rate will change your energy levels in many different ways. If you are working out you will have a higher heart rate and this will cause you to be tired after you work out.
To calculate percent heart rate change, first determine the initial heart rate (HR_initial) and the final heart rate (HR_final). Use the formula: ((HR_{final} - HR_{initial}) / HR_{initial} \times 100). This will give you the percentage change in heart rate from the initial value to the final value. For example, if your initial heart rate is 70 bpm and your final heart rate is 80 bpm, the percent change would be ((80 - 70) / 70 \times 100 = 14.29%).
It will lower the heart rate.