This greatly depends on the conditions one is swimming in, if conditions are very cold and the body temperature drops to 35 or below then you will develop hypothermia.
This is uncommon to develop unless swimming in extremely cold water.
Sorry, the above is dangerously wrong.
Extended submersion in ANY water substantially below body temperature (98.6F or 27 C) will cause hypothermia. For example, one of the dangers of open water swimming even in warmer waters is hypothermia - 80F water can cause hypothermia for someone not wearing a wetsuit who has been in the water for several dozen hours.
In more immediate terms, any person not wearing specifically protective clothes who swims in water below 50F (10C) risks hypothermia in a matter of minutes (a dozen or so, at the most). 70F (21C) can cause hypothermia to an unprotected swimmer in a couple (2-3) of hours.
For swimmers, hypothermia is generally not common, unless they have been in some sort of a situation where they can't get out of the water. The major danger is that once a swimmer is experiencing hypothermia, they have a relatively small window (minutes in most cases) to get out of the water before they die.
Water sucks heat out of your body 10 times quicker then air, so you could even get hypothermia in the summer.
shivering and euphoria
Hypothermia is a threatening condition, that can lead to death.
Hypothermia. "There are different types of hypothermia."
Hypothermia
Pulmonary hypertension, hypoglycemia, & hypothermia
Hypothermia is known to cause bruising
Yes, 'hypothermia' is a noun.
Yes, footballers can and sometimes do get hypothermia.
That is the correct spelling of the word "hypothermia".
you can prevent hypothermia by not getting cold
Hypothermia is another name for high colesterol. Eating too much or unhealthy habits can contribute to hypothermia.