I agree 100%. I was feeling really beat in the last 45-30 min as well. Your mind starts to get easily distracted, etc.
I think it's really important, when you do your GMATprep tests
, to mimic the real thing as close as possible. When you take your breaks, use the bathroom, eat something quick and start the next section. You don't actually get a full 10 minutes, because you need to include your check-in again. My breaks were closer to 7 min.
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