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Maybe CHOCOLATE helps you to stay alert, study and remember, but also keeps you from sleeping soundly and well the night before your tests. (Some people have this insomnia problem with COFFEE; but not me usually, although some TEAS in the evening will keep me awake all night.) Maybe go easier on the chocolate, as a little goes a long way, or study earlier the day before your test, so your body can sleep that night and you will awake fully refreshed and ready to score well on exams the next day.

I would bet Utada and Company uses the energy of being onstage in performance, the so-called ENERGY OF THE AUDIENCE, to arrive at PEAK PERFORMANCE or what is sometimes called in athletics "IN THE ZONE."

Now I am going out on a tree limb to suggest before a test, maybe two days earlier, you the STUDENT can purge your body's digestive system by ingesting Shin Ramyun Gourmet SPICY NOODLE SOUP or something similar, with onions and celery and egg and potato added. Or maybe I am just reporting to you the lunch I just had.