2. what increased my heart rate the least was spinning.
3. My Heart rates are accurate because all my results were in 1 in the 30's 40's and 1 in the 50's and times 3 was 100's and 1 in the 90's.
4. The changes of my heart rate as I got more active increased.
5. My heart rate changed as I got more active because I was using energy which caused my heart to pump faster to deliver more blood to active muscle cells and carries away their waste.