winter swimming or polar bear swimming or ice swimming
Apart from risks, scientific studies also provide evidence for health benefits. Winter swimming contributes to better general well-being. When compared to a control group on the profile of mood states rating scale, winter swimmers experience less stress and fatigue and more vigor. They report to have a better memory function, better mood and feel more energetic, active and brisk. Swimmers who suffer from rheumatism, fibromyalgia or asthma report that winter swimming relieves pain.[16]
There are indications that winter swimmers do not contract diseases as often as the general population. The incidence of infectious diseases affecting the upper respiratory tract is 40% lower among winter swimmers when compared to a control group. Short term exposure of the whole body to cold water produces oxidative stress, which makes winter swimmers develop improved antioxidative protection.[17]
russian walruses morzh
http://www.seagrant.umn.edu/coastal_communities/hypothermia
There are indications that winter swimmers do not contract diseases as often as the general population. The incidence of infectious diseases affecting the upper respiratory tract is 40% lower among winter swimmers when compared to a control group. Short term exposure of the whole body to cold water produces oxidative stress, which makes winter swimmers develop improved antioxidative protection.[17]
russian walruses morzh
http://www.seagrant.umn.edu/coastal_communities/hypothermia