Styrofoam (expanded polystrene) and an aluminium sheet keep your body warm
Japan Mountain Medicine calls on thevictims of the earthquaketo pay attention to become HYPOTHERMIC.
Elderly, those who have longtime illness and childeren are more prone to hypothermia. Signs include coldness in limbs and shivering.
If you have symptoms stated above, prevent wearing wet clothes, sitting on a cold floor or a windy place. Also, it is easy to become dehydrate so keep taking water (not necessarily hot water). It is a good idea to put on a scarf and beanie as the face, neck and head are places where you lose heat. Try to stay in a blanket with other peple to keep you warm.
It would be hypothermia if you are unsteady on your feet or have your consciousness dimmed although you don't have shivering.
You are likely to have more severe Hypothermia if you have shivering for a while and stopped without raising body temperature. This condition gets worse very quickly it is important to take the person to the hospital. If can't take the person hospital, put hot water bottle under the armpits, around the neck and groin to keep the person warm. Be aware of burn, if you apply hot water bottle (over 42degree) for a longtime.
Economy Class Syndorome could be fatal regardless age when you are at the same position for a long hours in a narrow place, blood clots develop in veins in your calf then the clot travel to and block the lung when standing up.
To prevent this, stand up and walk regulary even a short period of time. Elderly or injured who are difficult to walk, please stretch your calf by moving your ankles or massage your calf. This helps to prevent Economy Class Syndrome.
If you don't take enough water blood gets thicker and there will be high risk to develop clots so plese have water regulary.