Heart rate

Heart rate is determined by the number of heartbeats per minute of time. The measurement of heart rate is used by medical professionals. 12 year olds heart rate should be in between 70-110 beats per minute when the child is at rest. To mesure your heart rate you put your two fingers on your risk and count how many beats you have per minute. When you start to get older our heart beats tend to get slower and your heart goes weaker.