Create effective insulation:
Wear warm clothing with layers that will retain heat.
Use special warm sleeping bags and blankets.

Isolate the room:
Close doors and windows, using blankets or other materials to improve insulation.
Curtains in front of doors can reduce heat loss.
Close holes and cracks:
Use caulks to seal holes and cracks in windows and doors.
Insulate window frames with clothing or other materials.
Create a safe place for the fire:

Prepare supplies:
Keep a supply of food that you can eat without cooking.
Carry bottles of water or the ability to gently melt snow to obtain water.
Keep your body warm:
Move actively to stay warm.
Wrap your head to reduce heat loss.
Use hot bottles of hot water as a source of heat.
Stay strong:
Limit physical activity to save energy.
Maintain a good mental attitude to maintain morale.
Be prepared for emergency situations:
Have a first aid kit.
Know how to use the radio and turn to it for information about the situation in the world around you.