The best list of tips and tricks for scoring high on the GMAT

This list is not finished yet. I'll add more points to it as they come to my mind.

A month before the GMAT:

1. Fall ill a month before the GMAT. I know it sounds weird, and is something that isn't exactly under one's control, but when I was down with common cold, fever and a sore throat about a month before my GMAT date, I was actually happy that I fell ill. August and September are the months in which it's easy to fall ill in the North India region. By falling ill a month before the GMAT, my body's resistance to common fevers got refreshed, virtually ensuring that I wouldn't fall ill again till my GMAT date. Of course, you can't afford to be ill close to the date your GMAT is scheduled.

On the day of the GMAT:

1. Carry some food stuff with you that's light, nutritious, and stimulating. Consume this during the break to both energize and stimulate yourself. An agile body and an agile mind can sail faster and more smoothly through difficult questions.
2. Before going to your test center, read some news stories to lubricate your brain's information processing systems (this is similar to warming your body before doing a hard workout at the gym).
3. Utilize the tutorial time (before the actual timed test starts, the GMAT software presents a brief tutorial) to make sure that your keyboard and mouse are working properly. Smoothly working keyboard and mouse save valuable seconds and also reduce anxiety.