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What I was testing during his experiment is my heart rate during arm lifts and high knees.What I did in this experiment is that I did arm lifts and high knees and I tested my heart rate. My controlled experiment is resting heart rate and my variables  are arm lifts and high knees.
My legs require more oxygen because when you use your legs you are using more oxygen than your arms.And the legs have more  muscles than your arm so your legs need more oxygen.
If arm lifts and high knees are completed to see which will increase heart rate more ,then i think high knees will make my heart rate increase more because you are using more energy then your arms.
My hypothesis was correct   because when i did arm lifts my heart rate was down and when i did high knees my heart rate went up.
the average for booth test was 157.3 for arm lifts and for high knees was 160.
yes the patterns were sometimes going up and down.
the results were important because you were testing your heart rate.what i have discovered is that high knees take more oxygen than the arm lifts.
how i would mess up is that i was not going so high on the high knees.
a possible error is not going fast enough.
the effort of the errors is to learn from your mistakes.
some improvements is to do better than the last time.when you are doing science experiments you know what you are doing.
because the circulatory brings blood and the respiratory brings air.
Why this is important in the real world is because so you know how much you work so your heart rate goes up or down.
Why learning about the connection between the circulatory and respiratory and muscular systems significant is because you get to know about the systems and how they work.

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I was doing different paces  each time.And I ran into to people.

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1.Find resting heart rate-place two fingers on side of neck at artery and press lightly.
2.count palse (heart beat)for 15 seconds.
3. this number this number 4 to get bpm. Write this in your data table Resting Heart Rate Control.
4.Repeat 2 more times for a total of three trails.
5.Find the average for resting heart rate : to do this add the three trails and divide the total number by 3.Record in data table.
Arm lifts.
1.Move your arms and have them go up and down.
2.then you find your heart rate and count.
3.then you repeat 2 more times and check your heart rate 2 more times.
high knees
1.move your legs up and down.
2. do it 2 more times.
3. check your heart rate.
4.check your heart rate 2 more times

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1.I will be using just my arms when I do (arm lifts).
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 amount of exertion or force.
5.I will be doing each exercise for 3 trails for each varibale.
6.I will be counting my heart rate for 15 seconds and will then multiply it by four to get beats per minute.

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The circulatory and the respiratory system work together is that when you inhale.And then when we exhale the air that you breathe in the blood goes to the muscles ans the muscles create energy.
How the heart and the rbc contribute is that they heart pumps blood.And the red blood cells protect the blood.
The leg has more size and the leg has more mass and the legs has more cells than the arm.
How the difference between the muscles relate to the need of oxygen the arm does not need a lot of oxygen but the leg does because it has more mass and more cells and it is bigger than the arm.
Why does exercise
make a greater need for oxygen is because when you do sports or work out your body needs more oxygen.
My experience with heart rate is that when I played sports my heart rate goes up and when I run a lot my heart rate goes up and when I go to bed my heart rate slows down.

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If arm lifts and high knees are completed to see which will increase heart rate more, then I think High Knees will make my heart rate increase more Because use more engy with legs then with arms.

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1 timer.
1 pencil.
1 paper.

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Control Resting heart rate. Variable 1 arm lifts.Variable 2 high knees.

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if i do arm lifts and high knees how will the use of different muscle groups affect my heart rate?