When wet and cold, your body will feel much colder than it actually is outside, which speeds along the process. When you are cold, you'll start shivering to warm yourself up. Your body focuses most of its energy on warming you up, so with time your blood will move from your fingers/hands/toes/feet to your core in an effort to keep the vital components operational. The problem here is, when the blood leaves these body parts (especially when you are wet as your questions states) they are at an even higher risk of Frostbite.
If your body temperature continues to fall (think around 95° F) Hypothermia begins to set in. Hypothermia is when your body is losing heat faster than it can replace it. Symptoms include stomping and uncontrollable shivering as your body tries to warm up, slurred speech, loss of coordination, and memory loss. After a point, you will stop shivering which is very bad. If one does not receive help soon at this point, they will probably be rendered unconscious and die.
So basically... stay warm and dry.
It will react in a UN suppressed way .
A coat is a clothing material that you wear outside on cold days to protect your body from the cold and keep you warm
The thicker the clothing, the more heat the clothing is able to trap close to your body. Also, why is this in the Tigers category?
Cold environments and insufficient insulation (clothing usually).
Cells in the human body can freeze if they are subjected to cold for a long enough period. Frostbite is, and has been, a known threat to individuals who are out in the cold without protective clothing.
alkali metals react violently in cold water
Generally you'd wear clothing objects, lots of layers of them, and clothing to protect your body from the extreme polar cold.
Newspapers can help keep you warm by insulating your body against cold weather when used as additional layers of clothing or bedding. However, they are not as effective as proper cold-weather clothing or blankets.
All metals, if they do react with water at all, react faster in steam than in water. However, the metals that react SLOWLY with cold water are the metals from Group-IIA(Magnesium, Calcium, etc).
they cant muntain there body temperature
If you are cold, then there are many things that could be wrong. You could be naked in anarctica. If you have ruled out all environmental factors such as being in a freezing river, it is possible that you simply do not have enough fat or clothing to insulate you.
They shiver