It is important to consume warm drinks that are sweetened to help stay warm; it is also important to avoid, as much as possible, coffee and tea because of their diuretic properties.
Working in the cold
Cold weather presents a real risk of frostbite. Wear proper clothing for cold, wet, and windy conditions. Layer clothing to adjust to changing temperatures. Wear a hat and gloves, in addition to underwear that will keep water away from the skin. Use the buddy system; work in pairs so that one worker can recognize danger signs. Drink warm, sweet beverages (sugar water, sports-type drinks) and avoid drinks with caffeine (coffee, tea, sodas or hot chocolate) and alcohol. There are increased risks for workers taking certain medications, in poor physical condition, or suffering from illnesses such as diabetes, hypertension, or cardiovascular disease.