per breath. After exercising the average respiratory volume continued to decrease to 0.14 liters per breath. The average heart rate was 64 beats per minute during the pre-exercise period. During the activity period the heart rate increased and the average heart rate was 128.2 beats per minute. During the post-exercise period the average heart rate decreased form 128.2 beats per minute to 92 beats per minute. During the pre-exercise period the average systolic pressure was 120.3, and the average diastolic pressure was 77.3. During the activity period the average systolic pressure was 159.6 and the average diastolic pressure was 92.8. During the post-exercise period the average systolic pressure was 121 while the average diastolic pressure was 78.6. Discussion The hypothesis is that the human body tries to maintain homeostasis during any activity level. This hypothesis was supported. During the experiment it was observed that heart rate and respiratory rate, sweat rate and blood pressure all increased during the period of exercise and slowly decreased back to normal after exercise. Respiratory volume decreased during exercise and continued to decrease after exercise. These changes in the body can be attributed to the body having to do cellular respiration at a faster rate due to the individual needing more energy simply because they are expending more energy by exercising. When the body can’t keep homeostasis then that might make place for disease. For example, the human body sweats in order to cool off because too much heat can make proteins break down. Well if the human body can’t cool off then it is not able to keep homeostasis which can cause deathly conditions such as heat strokes which may then lead to death.