Advice: Is my sons PE teacher out of line by making students run until they puke?

Last week my son (5th grade) came to me with the concern that his PE teacher is making kids run too hard. He had them run stairs until the students puke.I ran into one of the other students at a store and asked him about it, and he confirmed that the teacher is indeed making the students run until they puked. His exact words were "I've puked so many times I've lost count."This is a middle school grades 5-8.I plan to go talk with the school to get their side of the story, however I'm wondering if I'm wrong in my thinking. I see no Benifit or purpose.What is the benefit to running this hard? What does it accomplish? via /r/Parenting http://ift.tt/2ohTUMV