I remember in high school, there were certain classes in which I always got really tired. Eventually I realized they were the classes with the most students stu

I remember in high school, there were certain classes in which I always got really tired. Eventually I realized they were the classes with the most students stuffed in the smallest rooms. The worst offender, for example, was health class (ironic in hindsight, I suppose), which took the place of phys. ed. for one quarter and therefore had to fit an entire gym worth of students into a single classroom.