The MBE is basically like taking 8 LSAT logical reasoning sections in a row. Think of that as taking two LSAT's, back-to-back, with all four sections being LR. Or as taking one really long LSAT. Or as taking a multiple-choice, multi-state bar exam with 200 questions.
At this point, I've been able to make myself do 34 questions in a row. 200 is a much bigger number than 34.