circadian rythm, your body's natural 24-hour clock that tells you when to sleep and wake up., improve, to become better or to make something better., supplement, a product (like vitamins) that you take to help your health., evidence, facts or information that show something is true., hack, a simple trick or clever way to do something more easily., boost, to increase or improve something., snoring, the loud sound some people make when they are sleeping., consistent, happening in the same way all the time; regular., legit, real, honest, or true (an informal word).

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