This is because you are still fresh and have the power to take 2 blocks in a stretch.Thank you indrag and yoramfishke for the help, but why both of you did not put any break after the first block?
Research has shown that the human mind can only concentrate at peak performance for 50 to 60 minutes. Taking 2 blocks at a time (2 hours) is not doing justice to what you can potentially achieve score wise on the test.http://www.instituteforboardprep.comThis is because you are still fresh and have the power to take 2 blocks in a stretch.
Also remember that many students report that the first block is the most difficult one so if you take a break after it and you reflect on it this may kill your motivation and have an adverse effect on your entire exam day, therefore walking over it straight to the second block (more likely you'll answer it better) will boost your confidence and set you up for the rest of the exam.
Also remember that when you do your qbanks do at least two blocks consecutively so that you get ready for the real first two blocks