Study for 4 hours a day. If you can structure your study schedule similar to how the actual exam is structured you will get used to it.

Mike858 wrote:Study for 4 hours a day. If you can structure your study schedule similar to how the actual exam is structured you will get used to it.

I already do that. Sometimes I do 6 hours. But I take breaks every 2 hours or so.

Mental fatigue of the kind you are describing is often based on the way that you approach problems. If you approach each problem with a do or die sort of effort and you are fighting each one then you will be exhausted well before the end.

For example: how often are the verbal section are you down to two answers and those answers really seem to be about equally possible. You look at one and then the other, straining for that difference that will allow you to make the choice. It is that straining that takes the toll on you.

What if I were to tell you that when I go through the verbal section only about 5 questions leave me debating the answer choices while the rest of them are pretty automatic?

It takes no toll on your mind, it does not leave you fatigued if you are able to do problems in an efficient and decisive manner.

It is not enough to do long sessions of practice. You will simply be exhausted in practice as well. If you are an inefficient runner who is training for a marathon it is not enough to go on longer runs and still be as inefficient as you always have been. If you want to avoid hitting "the wall" and wanting to collapse with fatigue then you need to become more efficient.

My suggestion is look to your techniques and methods. If you want to arrive at the end of the exam and not be completely jaded you need to have more than half of the questions on each section be pretty automatic. You need to have only a few questions on each section that put you in that sort of "Is it B, no is it C, maybe it is B, but C looks good, too" sort of agony.