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In this experiment I was testing my heart rate to see which increased my heart rate more, my arms or legs.  I found out that my legs were making my heart rate faster than my arms because my legs used more oxygen.

My hypothesis was that if windmills and high knees are completed to see which will increase Heart rate More then I think my legs will increase my heart rate and use more energy because my legs would need more oxygen.  My hypothesis was correct because high knees increased my heart rate more than windmills.

A possible source of error would be if I counted wrong when I was taking my pulse after the exercises which would make my data wrong.  It is important for scientists to know about possible sources of error because they wouldn't know if they did something right or wrong if they didn't know what mistakes could happen.

This experiment helped me understand the relationship between the circulatory and respiratory systems because I learned that when I breathe air it goes into my lungs and
make oxygen that pumps my heart.

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If windmills and high knees are completed to see which will increase Heart rate More then I think high knees will increase my heart rate more because my legs are need more oxygen to work.

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If I do windmills and high knees how will the use of different musical groups effect my heart rate?

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1. find resting heart rate_ place two fingers on side of neck at entry and press lightly.
2. count pulse (heart beat) for 15 seconds.
3. multiply this number by four to get BPM. write this in your data table resting heart rate control.
4. repeat two more times for a total of three trials.
5. find the average for resting heart rate .to do this add the three trials and divide the total number by three.

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1 timer
1 pencil
1 paper

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1.  I will be using just my arms when I do windmills.
2.  I will be using just my legs when I do high knees.
3.  I will be doing each exercise for 60 seconds.
4.  I will be completing each exercise at medium speed with equal exertion or force.
5.  I will be doing each exercise for 3 trials for each variable.
6.  I will be counting my heart rate for 15 seconds and will then multiply my heart rate by 4 to get beats per minute (bpm).
7. I will be resting 120 seconds between each exercise trial.