AMP (UP) is an acronym that stands for REV, INCREASE, and PEP. REV stands for 'REVISE' or 'REVIEW, ' which means to look over something again in order to make changes or corrections. INCREASE means to make something larger or greater in amount, size, or degree. Finally, PEP stands for 'PEP up, ' which means to make someone or something more lively, enthusiastic, or energetic. Together, these three words form the acronym AMP (UP), which can be interpreted as a call to action to REVIEW, INCREASE, and energize something.