a) When you exercise, your heart rate increases to provide your muscles with the oxygen and nutrients they need to function properly. The increase in heart rate is a normal response to physical activity, as the body tries to meet the increased demand for energy.
b) Yes, different types of exercise can affect your heart rate differently. For example, aerobic exercises like running or cycling can cause a greater increase in heart rate than resistance exercises like weightlifting. This is because aerobic exercises require more oxygen to be delivered to the muscles, which requires a higher heart rate to pump more blood.
c) To calculate your heart rate using the table, you need to count the number of beats in 10 seconds for each activity and then multiply that number by 6 to get the beats per minute. For example, if you count 15 beats in 10 seconds while walking, your heart rate would be 90 bpm (15 x 6). If you count 20 beats in 10 seconds while jumping, your heart rate would be 120 bpm (20 x 6).