As a way of getting you ‘ready for action’, blood is diverted towards the major muscle groups. Blood flows away from our digestive system, causing the bladder to relax and we might feel the need to pee. The mouth goes dry, nausea can occur and we get the ‘Butterflies’ feeling in our stomach. Blood also rushes from extremities, leaving us with cold hands, but often sweaty palms as the action-ready body starts sweating to avoid overheating. Legs and hands can start trembling and feel weak while tension starts building in big muscles like the thighs, neck and shoulders.