<p>regular gatorade has no caffeine (caffeine actually dehydrates you, but gives you energy).</p>
<p>I always recommend arizona green tea (or any ginseng tea).</p>
<p>I’ve found that while caffeine energizes me, green tea actually helps you concentrate as well.</p>
<p>I actually wouldnt drink anything before the test…if anything, wait until you think you are losing concentration, and then drink the stuff. </p>
<p>Ive found that i get a pretty decent adrenaline rush when i know im taking the most important test of my life, so until that wears off, i dont need any <em>extra</em> energy.</p>