The phrase "breaks out a sweat" refers to the act of perspiring heavily due to physical exertion or nervousness. Antonyms for this phrase could include "stays cool and calm," "remains dry," "avoids sweating," or "experiences no moisture on the skin." While sweating is a normal bodily response to increased activity or stress, some individuals may find it uncomfortable or embarrassing. In situations where sweating is undesirable, it may be helpful to try relaxation techniques, wear breathable clothing, or use antiperspirant products. Ultimately, the choice to sweat or not is largely out of our control, as it is an involuntary response controlled by the autonomic nervous system.