Haha, you're telling me brother. This year we took 25 units in the Fall, 23 units in the Spring, and now 21 units during the Summer (oh what a nice break), equaling out to more or less 9 classes a semester, most of them hardcore sciences, so I know what you mean about being burnt out. And, we got all of a week off for summer break...yay.....
Anyways, I can say that the best refresher after being burnt out from school is to take a few days off. And by days off, I mean, don't do ANYTHING school related. Don't GO anywhere NEAR school (if you're on break, ;p), don't THINK about school. Go do something fun, go to the beach, go for a road trip - something to clear your mind, and open up some space for all that new info you're about to cram into it.
By a few, I mean at least 3, a week if you can. I know you've got to study for the DAT, but if you take time off, you'll study all the better.
After I had that week off last week, I felt incredibly refreshed, and other than the fact that I was leaving home to go back to school again, I was looking forward to starting up again.
Oh, and when you are studying, study hard, but don't kill yourself. Take time everyday to do something you enjoy, even if it's small. For example, Wake up in the morning, eat some breakfast, study for 3 hours, get some lunch, do another 3-4, and then go see a movie or something and call it a night. If you just sit in your room for 10 hours at a time, you're going to get burnt out fast.
Good luck!
