How and why are athletes monitered?

Answer 1

In case they get hurt they have to be monitored and also so people wont come and tackle them to get their autograph. All the person does is stand behind him and guards him

Answer 2

graphs and charts can be plotted on what an athletes pulse rate is and how much exercise they do. from this they can see when athlete has peaked their fitness level.

Answer 3

They are monitered to show how are bodies work and how, when u exersize, our bodies function differently. Scientist who study people use heart rate monitors, lung, etc