I recently took the real gmat and received a 710.
I took all of the gmat prep tests, most of which under worse than ideal conditions (after work) and rigorously timed each one. Each was done with the essay and IR.
Here are my scores:
Gmatprep 1: 720 (tired, caffeine)
Gmatprep 2: 760 (tired, caffeine)
Gmatprep 3: 760 (tired, caffeine)
Gmatprep 4: 760 (tired, caffeine)
Gmatprep 5: 730 (tired, caffeine)
Gmatprep 6: 770 (rested, no caffeine as I noticed that it may have been contributing to stupid mistakes and not reading carefully)
For the real test, I was sure to get plenty of sleep. Didn't feel nervous, didn't drink caffeine, ate healthy before the exam, and felt great during the actual exam as well.
Do you think this is bad luck? Or perhaps I perform better tired than fresh?
Thanks!