There's lots of science behind it, that's why the 4 day work week is what scientists are trying to push and a lot of government want to pass.
I understand about getting the educational value of college. Europe just doesnt have that idea of "just deal with it". There are lots of laws and regulations of companies to protect their employee's health and well being, i just wish they would apply the same thinking to students' wellbeing. I live in Ireland and one student in Cork or Limerick killed himself after he failed a subject. And in a small country like mine that is ranked as the 2nd highest quality of life in the world, that's very rare and unheard of.