# Heart Rate Experiment Lab assignment

Unlike most workers, the heart never gets time off. Each hour, an average heart pumps about 75 gallons of blood throughout your body. Even more difficult, during exercise the heart must work overtime. The heart is the pump that causes your blood to circulate throughout your body and to all of your cells. The heart makes sure that the oxygen you breathe, the nutrients from the food you eat, and the water you drink, is delivered to your body. Without the heart, each of your organs would not be able to function!
When you exercise, you increase the demands for energy and gas exchange. Therefore, your heart must increase the speed at which the blood delivers the vital nutrients. How hard is your heart willing to work? In this investigation, you will examine how much your heart rate will increase and the amount of time it takes for your heart to return to its normal rate.
Collect Resting Pulse Rate Data
A pulse is the vibrations created each time your heart pumps blood through your arteries. The rate of your pulse indicates the speed of your heart pumping. Find a large tendon on the underside of your wrist. Using your middle and ring finger from your other hand, locate your pulse just below the base of the thumb and on the outside of the large tendon.
1. Find your resting pulse rate before you exercise. Count the beats in your pulse for 30 seconds, then multiply that number by 2 to find the number of beats per minute. Repeat the step two more times, and average your results. Record your results in Table 1.
2. Post your results in the D2L course discussion board and collect data from the discussion board for two other students.
Table 1: Rate of pulse when resting

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