A pump gym, also known as muscle pump, refers to the temporary swelling of muscles that occurs during a workout due to increased blood flow. It is a phenomenon that most fitness enthusiasts experience, regardless of their overall goal. The muscle pump occurs when fluids, including water and blood, accumulate in the muscles during movement, causing them to look bigger. The muscle pump is not only temporary but also does not have any direct influence on strength and power. However, some strength and conditioning professionals believe that getting a good muscle pump during a workout can augment training and lead to better muscle gains. To get a good muscle pump, one should perform at the top end of their capacity until muscle failure, and blood vessels expand and blood flow increases, making muscles look bigger. The most efficient way to get a muscle pump is to lift weights, specifically at high volumes with more reps at moderate loads. Pump training consists of lifting light weights for a high number of sets and reps with short rest periods, with the goal of delivering a wicked pump to the muscles. However, pump training should never be the primary focus if one wants to gain muscle as fast as possible, but it can help build muscle faster when done in conjunction with heavy strength training.