Many cold injuries can be prevented by protecting yourself when you are outdoors in cold weather.
Bring an emergency kit if you are going into the backcountry so you are prepared for cold, wet, or windy weather conditions that might arise.
Head for shelter that will protect you from wind and rain if you get wet or cold.
Avoid doing too much activity and sweating. Sweating increases heat loss through evaporation, so you will feel cold.
Avoid touching metal, especially with wet hands, because it will make you feel colder and may cause frostbite.
Eat plenty of food to help maintain your body heat. Carry high-calorie foods, such as candy bars and trail mix, when going out in cold weather.
Drink plenty of water. Carry extra water with you and drink it hourly. Your urine should be clear, not yellow or orange. If you are not urinating every 2 to 3 hours, you probably are not drinking enough fluids.
Affects judgment. For example, a person may not put on more clothing when it is needed if his or her judgment is changed by alcohol.
Can cause blood vessels in your skin to dilate. This increases heat loss.
Reduces your ability to sense cold because it depresses the nervous system.
Do not use caffeine and do not smoke while in the cold. Nicotine (from tobacco) and caffeine cause narrowing of the blood vessels in the hands and feet. When blood vessels are narrowed, less blood flows to these areas, causing the hands and feet to feel cold.