In Biochemistry class, we learned about the circulatory system and we did a lot of activities. One of the activities is called the Heart Activity. We did this lab using the software, called Sparkvue. This activity is where we use EKG tabs to measure the heart rate of a person at rest and after exercise. One of the terms I’ve learned from this experiment is RR interval. It is used to calculate the heart rate at beats per minute or second.