There are a plethora of synonyms for the phrase "puts new life into," which essentially means to revitalize or re-energize something. Some alternative phrases might include "reinvigorates," "refreshes," "rejuvenates," "stimulates," or "energizes." These synonyms can be used in a variety of contexts, from describing how a new promotion at work has given someone a renewed sense of purpose, to explaining how trying a new hobby has breathed new life into someone's schedule. Regardless of the specific situation, using a variety of these synonyms can help add depth and interest to your language, and can help you better convey the idea of revitalization in your writing or speech.