Canada Safety Council recommends the following tips for staying comfortable and preventing hypothermia when working or playing outdoors:

• Wear a warm hat—most body heat is lost through the head. Children should keep an extra hat at school.
• Wear layered clothing. Layers allow warm air to stay trapped around the body.
• Protect your feet and hands. Wear loose waterproof boots. If the boots have liners, carry an extra pair to replace damp ones or take an extra pair of socks. Mittens are warmer than gloves. Carry an extra pair of mittens to school, on outings, etc.
• Prevent dehydration and exhaustion, which can lead to hypothermia. Drink plenty of fluids and pace yourself when doing vigorous activities.
• Stay fit by exercising and eating well—people who are fit are less susceptible to hypothermia.
• If you stay indoors, avoid moving from a hot environment to a cold one. Excessive sweating caused from an extreme change in temperature increases the risk of developing hypothermia.
• Eat high-energy food such as nuts and raisins.
• If you are travelling (on the road or in the wilderness) carry emergency supplies.