The phrase "puts the rack" has numerous synonyms, all of which can be used to describe an action that exerts pressure or strain on a person or thing. These synonyms include: stretches, stresses, strains, pulls, tenses, twists, contorts, torments, and tortures. Depending on the context of the phrase, some synonyms may be more appropriate than others. For example, "stretches" might be used when referring to physical exercise, while "torments" may be used in a psychological context. Regardless of the specific synonym used, the phrase "puts the rack" connotes a sense of discomfort or pain.