There are several synonyms for the phrase "stopped for a breath." One option is to use the word "paused," which suggests a momentary break in activity to catch one's breath. Another possibility is to use the word "rested," which conveys the idea of taking a break to recuperate and regain energy. "Halted" is another choice, conveying the sense of coming to a complete stop to catch one's breath. "Took a break" is a more informal synonym, while "hesitated" implies a brief pause due to uncertainty or hesitation. Ultimately, the best synonym to use will depend on the context and the tone of the writing.