Your friend's heart beats 18 times in 15 seconds when at rest. While running, your friend's heart beats 25 times in 10 seconds. Question 1 a. Find the heart rate in beats per minute at rest and while running. While at rest, the heart rate is 18 beats per minute. While running, the heart rate is beats per minute. Question 2 b. How many more times does your friend's heart beat in 3 minutes while running than while at rest? Your friend's heart beats ___ more times while running.