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1. Jumping jacks and sprinting increased my heart rate the most. But being stressed was after that.
2. Walking and laying down didn't really get my heart rate up at all. I'm was surprised that walking didn't get my heart rate up more though!
3. They were not accurate because it thought jumping jacks would get my heart rate up the most but sprinting did! I thought that doing 50 jumping jacks would get my heart rate up more than sprinting, but I guess I was wrong. And being stressed had a higher heart rate than standing!
4. My heart rate became higher and much faster. I was also getting a little bit tired and to me my heart beat got louder!
5. Our body's cells need more energy when they are working faster and harder. So the heart pumps faster and produces more blood so the cells can keep working.
So when you are running the heart will beat faster than normal. But when you're sleeping the heart is pumping blood very slowly, for the cells aren't doing that much work.
I really enjoyed this activity! I loved that we got to use stethoscopes, it was very fun to listen to our heart beats. I also like that we used math to find out how many times our heart beats per minute. The thing I didn't like was the risk of us going deaf by the noise level that we heard while we had the microscope on! But what I did was not worry about it and just did the project! The thing that was the hardest was making sure that you didn't get the number of beats wrong! That would have messed up the whole project! But overall I had lots of fun!