How Does Exercise Affect Your Breathing Rate

My testable question was “How does exercise affect your breathing and heart rate?” and my hypothesis was “If you exercise then your heart and breathing rates will go up because your body needs more oxygen to be circulated so that your body can keep up.”. My hypothesis was correct, as proven by my test. My partner, Brian’s heart rate when it was resting was 56 beats per second and his breathing rate was 40 beats per second. We made him do jumping jacks for ten seconds and his heart and breathing rates both went up. His heart rate increased to 100 beats per seconds and his breathing rate got to be 48 beats per second. This alone supports my hypothesis because in my hypothesis I said exercise, like jumping jacks, increases your heart and breathing rates.
Just to make sure that the first test wasn’t a fluke we put Brian through three more rounds of jumping jacks increasing the length of time he exercised by ten seconds every round. After 20 seconds of jumping jacks, Brian’s heart and breathing rates did not increase at all. After 30 seconds of jumping jacks his heart rate increased to 108 beats per minute and his breathing increased to 52 breaths per minute. Then we made Brian exercise for 40 seconds. After that his heart rate jumped to 160 beats per minute and his breathing increased to 64 breaths per minute. After running all these tests we decided that no that first test was not a fluke and that yes my hypothesis is correct. To make sure that his increased breathing and heart beat was due to the exercise we also measure Brian’s heart and breathing rates after he rested for a minute. They decreased to 132 heart beats per minute and to 48 breaths per minute. Then after another minute of rest his rates had continued to go down to 84 heartbeats per minute and 40 breaths per minute. This proves that his elevated rates were due to the