Upping at 'em is an informal expression that means getting ready to do something with energy and enthusiasm. Some synonyms for this phrase include gearing up, revving up, getting fired up, amping up, and preparing to hustle. All of these synonyms convey a sense that one is about to tackle a task with drive and determination. Other expressions that convey similar ideas include getting ready to rumble, psyching oneself up, and getting in the zone. Whether you're preparing for a workout, getting ready to take on a new project at work, or simply trying to motivate yourself for the day ahead, these synonyms for upping at 'em can help you find the energy and enthusiasm to succeed.