Having at least a few hours of sleep between all that shit you studied and your test will get better results than pulling an all nighter to study like 4 more hours. First of all, your brain sucks balls at information storage and retrieval when you're exhausted. And second of all, sleep is when your brain organizes all the new info you picked up, so you will actually remember more of what you studied after you've slept.
Having at least a few hours of sleep between all that shit you studied and your test will get better results than pulling an all nighter to study like 4 more hours. First of all, your brain sucks balls at information storage and retrieval when you're exhausted. And second of all, sleep is when your brain organizes all the new info you picked up, so you will actually remember more of what you studied after you've slept.