Physical Education Courses Being Mandatory For All Students In School?

Physical Educations Courses (PE) in school should be resulted at the level of each student. What I am saying is that they are making each student run a certain time and exersize at a certain time but that is not how it should be! The student should just run at a nesesary time of there desion, what I am saying now is that if I was  that student I would just run the time that I felt was nessasary for me! When I am at PE I do not like to run for the 5 minutes we half to run I think for me personaly it is 3 minutes but 5 minutes might be nessasary for some students! But this is helping students that are over weight loose weight! The picture below is students at a school running!

Picture From Here