The phrase "up now" can be replaced by various synonyms to express a state of being alert or awake. For instance, "awake" and "wide-awake" signify being conscious and in a state of awareness. Similarly, "rise" or "arise" signify the act of getting up after being asleep or lying down. "Spring up" or "jump up" may also be used to express a sudden movement from a lying or sitting position. "Get up" and "stand up" indicate that one has moved from a sitting or lying position to a standing one. In any case, these synonyms for "up now" convey a sense of being active and alert.