The phrase "break sweat" refers to physical exertion, often in the form of exercise or strenuous activity. Antonyms for this phrase might include "relax," "rest," "unwind," "take it easy," or "laze." Instead of pushing oneself to the limit, these words suggest a more calm and leisurely approach to life. Other antonyms might include "slack off," "dawdle," "procrastinate," or "idle," all of which imply a lack of effort or motivation. While it's important to stay active and maintain a healthy lifestyle, sometimes it's equally important to take a step back and allow oneself to fully relax and rejuvenate.