Low temperatures can also be a problem. If your idea of adventure is sailing rafting or climbing mountains you might find yourself in cold conditions.The main danger is hypothermia which occurs when your body lies heat faster than it produces it. A long mountain walk on a cold windy day plus wet clothing tiredness and hunger could also give you hypothermia. You need to be prepared by wearing several layers of clothing (not just one big thick sweatshirt). You must wear a hat as a lot of body heat is lost through the head and a good waterproof jacket. You don't need to have huge amounts of food with you but sons sugary foods (like chocolate!) for quick energy and plenty of fluids are important if you want to stay safe in the clod.