Blood – it’s part of our body’s internal defence system, reacting to any invasion from outside. It regulates our body temperature and delivers substances we need to all of our organs. The average adult body has between five and six litres of blood flowing through it, and if, due to an accident, this volume were to decrease by just a third, the person would be in real danger of dying. Fortunately, there is a whole medical system dedicated to helping people survive such dire situations and most anyone can help. All you have to do is visit a donation centre in order to give blood. Every year donors help provide others with another chance at life, saving thousands all over the world with their donation.