gat sport - nitraflex pump - hyperemia & strength, intense performance gains, mental focus & muscle energy, vascular muscle pumps, 20 serving (fruit punch) gat sport this scientifically complex power output formula is designed to create dramatically extended muscle pumps while weight training. impressive, bigger and longer-lasting nitraflex pumps! it’s stim-free, and won’t keep you awake after night training. even those sensitive to stimulants can take it. plus, it stacks well with other gat products!