The obvious answer is sleep
But it's 12:43am and my test is at 8am. I need more time to understand diodes (mostly understand em), Zener diodes, voltage regulators, and I'm just about to go over transistors, the second half of the test, which I'm not bad at. Summer school really crams the information in fast! About 5-6 hours of sleep should be good for me tonight.
Have you ever sacrificed sleep for studying, and did anything exceptionally good or bad come out of it worthy of posting?