Getting pumped - 3 key factors

Training/Jens: How and Why you get pumped relate to limited blood circulation due to longer periods of high muscle contractions. The pumped feeling comes from three key factors and here is a more detailed article. 1. Lactate swells the muscle The muscle works best with fresh blood otherwise it starts to produce lactate in your forearms. 2. Fibre Lock/Cramp stiffens the muscle The muscle needs (fresh) blood to load the muscle fibre like a mouse trap. Once executed, the fibre gets stiff until new blood can reload the trap. 3. Flooded increases pressure of the muscle The muscle can after the climbing and in no-hands rests be flooded, i.e. high volumes of blood are pumped into the relaxed downward hanging arm. This can create a pressure that snaps the circulation in the capillaries and veins. Article about pulsation/tickeling gripping technique to increase the blood circulation, i.e. getting less pumped.