I NEED HELP ASAP QUICK WILL MARK BRAIN THING AND ADD POINTS LATER Here are your goals for this lesson:

Record your heart rate during a variety of activities.
Identify activities that increase your heart rate.
Explain why your heart rate increases.

In order to supply your body with oxygen from the lungs, the heart either increases or decreases in rate. Your heart is constantly adjusting without you knowing it. In this activity, you will record and chart your heart rate during a variety of activities. You will need a stopwatch or a clock with a second hand to gauge your pulse.

Heart Rate (Beats/ Minute)

Step 1: Lie down in a comfortable position for 3-5 minutes. After the time has elapsed, count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. To find your pulse, place your index and middle fingers under your jawline on either side of your larynx. Do not use your thumb. Record your heart rate in the REPORT document below.

Step 2: Sit in a chair for 3-4 minutes, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Step 3: Stand for 3-4 minutes, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Step 4: Run in place for 60 seconds, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Step 5: Do jumping jacks in place for 60 seconds, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Step 6: Sit in a chair for 60 seconds, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Step 7: Lie down for 60 seconds, then count the number of times your heart beats in 6 seconds. Multiply times ten to get the number of beats per minute. Record your heart rate in the REPORT document below.

Answer the following questions in your REPORT document.

According to your data, what kind of activities increased your heart rate?

According to what you have learned about the circulatory and respiratory systems, explain how and why your heart changed its rate.