How many classes a day are manageable?

<p>I have two back to back. The others are spaced out and two of my classes are only once a week courses (three including lab). The only thing I don’t like is that I have a Friday class from 1-4. I do not plan to overwork by the way, I just want to work enough to keep my cornell tradition. I like breaks in between to study and refresh for big exams, but that’s just me.</p>

<p>FYI- most exams are in the evenings =)</p>