In Pumping Iron, Arnold waxes poetically about, “the pump” by saying this: "The greatest feeling you can get in a gym, or the most satisfying feeling you can get in the gym is...the pump." Can you really disagree? We all have our different reasons for training, of course: overall health and well-being, the satisfaction of dedication, achieving a goal, looking great – all valid. All noble and good reasons for dedicating your life to the iron. But, let’s be honest – the rawest, most visceral, most primal satisfaction you can possibly enjoy is the feeling of an intense pump that seems as if it will tear your skin off. So, when was the last time you experienced a pump that incredible? Last workout? Maybe the one before that? At Core, it amazes us how many struggle to answer that question – and how seldom the industry has provided a product that delivers that kind of pump. With Core PUMP, we can confidently say you will never struggle to answer that question again. We have taken our standard, Core approach – amazing ingredients, in clinical servings, all formulated in a non-proprietary blend – to the issue of pumps, and we have produced a product whose name simply couldn’t have been anything else. Best of all, Core PUMP is completely gimmick-ingredient free. The compounds we have chosen are verified by science, backed by clinical research, and have been shown to increased bloodflow through a number of independent mechanisms. The pump from Core PUMP is therefore not just for vanity – though, you will likely spend more time in front of the mirror – but is also of real, verifiable, and measurable physiological benefit. Our beta testers described PUMP as, “Skin-bursting,” and “intense.” They also described it as, “The best I have ever used. Hands down.” See why for yourself.Our beta testers described PUMP as, “Skin-bursting,” and “intense.”. Enhance plasma and intramuscular volume expansion. Lower heart rate and improve endurance time. Reduce post-workout urine volume (more efficient fluid use). Keep athletes hyperhydrated for extended periods of time.