Heart rate

What is heart rate??? Heart rate is when your heart beats and you time it. It is measured to see if your heart is beating normal or badly.


When you exercise your breathe and your heart beats faster so it can pump more blood around your body to keep you moving

What is the normal heart rate for someone my age-show how the calculation is worled out: The normal heart rate for a 12 year is 70-110bpm for girls and boys. A basic way to calculate it is get 220 and minus your age off it. That answer would be your maximim heart rate.