Core Pump by Core Nutritionals Core Pump by Core Nutritionals is a full spectrum non-stimulant pre-workout. Unlike high caffeine alternatives which may induce jitters, anxiety, and a post-workout energy crash, Core Pump is designed to improve athletic performance while delivering unmatchable muscle pumps. Thanks to the addition of nootropics, Core Pump also encourages mental clarity, focus, and greater mind-muscle connection for training sessions which are second to none. Features Effective non-stimulant pre-workout formula Delivers clean energy Encourages muscle pumps Increases stamina and performance Our Thoughts Core Pump is one of our favourite pre-workout supplements on the market - which is incredibly impressive when you take into account the fact that it’s totally stimulant-free! What it lacks in caffeine is more than makes up for with additional performance-enhancing ingredients - meaning it packs a punch in terms of increasing muscle pumps, training endurance and even mental clarity and focus. All this, with no post-gym energy crash!