STAY AWAKE AND PAY ATTENTION IN CLASS. Take notes. Put in good quality time studying, ask the questions you have even if they seem silly (somebody else will likely be wondering the same thing). If you feel you are falling behind, seek help early and often. Make some time for yourself though, and I'd highly suggest at least an hour of exercise (core, cardio, weights, etc) every other day.

If you decide to make a drinking game with your classmates out of limitations, rest requirements and Exemption 3585, that'd be fine too.