|MadSci Network: General Biology|
Cold water increases the matabolic activities of the body. Body tries to maintain its temperature at 37 dec c. Hence, at cold temperature, body mechanism start working more regorously to produce heat. It may lead to quivering and increased blood pressure. Prolonged treatment at low temperature may be fatal for people with cadiac problems. However, it may happen at very low temperatures only where body fails to fight against the external problem.
Try the links in the MadSci Library for more information on General Biology.