IMO, this could help or hurt your performance. If you are taking this drink for the first time in your life before the test, it might end up screwing your mind with the energy boost.
But if you are an occasional consumer of such drinks then probably it might help you a lot..
One general advice is "Never do anything unusual before the test." Be absolutely yourself!!
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Redeem5 hour energy drinks
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Source: Beat The GMAT — GMAT Strategy |