PREVIEW
... drink two dextroses within half an hour before entering the exam room.
Because the exam consumes more brainpower and requires the body to provide more concentrated energy, so drinking two glucose in advance can prevent discomfort caused by tension, and even hypoglycemia.
He didn't know whether there was any real scientific basis for doing so, but because he did get the first place in the class after drinking glucose one time, so he silently regarded this method as a secret wea ...
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