Discussion

When you are being physical, your body works harder then it normally would. So being so your body needs more nutriments in order to keep going. Such as some minerals (Sodium is one of them) are sweated out along with some water. To replenish these nutriments you need to consume what you have lost. Gatorade is basically what is in your sweat. Those Waste products are things that are needed to run the body, if you run out of them your body will stop functioning.

When you are active your pulse is much faster because your heart has to pomp blood much faster to the muscles and organs so that they can work faster and harder. When doing physical activity, the heart has to pump blood much faster so that it can bring oxygen to the muscles, and eliminate waste products such as CO2. Exercise lowers the amount of oxygen in the body, and the amount of lactic acids and waste products increase, because the heart pumps faster so that the cells get the necessary amount they need to work.
Every single cell that the muscles contain need more oxygen when working harder. That is not the only substance that the cells need. Glucose gives the cells energy to work. This whole process is called cellular respiration.

When the results of the whole class was put on the blackboard i noticed that there was a flaw in some peoples measurements. Such as the results depended on how hard the person was working when they were doing the test. And also if the person was fit or not. The lower the pulse was when they were doing the moderate test the the better fit they were. So the results could have been different because of that. Also when we took the blood pressure we noticed that if you didn't have the sleeve on the right place it would give a wrong result.
Overall the test went smooth as long as you had all the tools. The body needs exercise in order to stay healthy and keep you strong.

Conclusion

The point of this experiment on the human body was to demonstrate how the body works together, such as moving the bones, or transporting the oxygen and energy to power those muscles and then getting rid of the waste that is created, either by urine or sweat. And to measure the rates at which they function we took the pulse, sweat, temperature, respiration, etc. With the results we can conclude that the metabolic rates increase by the higher demand of movement needed to preform the task that the brain has given.

References

For this lab report I used the knowledge that I have gained from my science teacher Mr.Shea (and some notes that I took down.)