So, in college I did Applied Math. and Neuroscience. Each requires about 50 hours a week (for me at least). So, 50 x 2 = 100 hours + 10 hours of volunteering in a lab. So yeah, I'd often put in 110 hour weeks for 3 months straight...semester after semester. I did well, but it was horrific mentally. How common are these sorts of hours for an undergrad.?