I believe there is research into anti-depressive effects of cold water exercise too. It seems to be helpful when treating stubborn depression that doesn't respo

I believe there is research into anti-depressive effects of cold water exercise too. It seems to be helpful when treating stubborn depression that doesn't respond to other treatments. The topic was covered in a BBC programme: https://www.bbc.co.uk/programmes/p047z13f https://www.bbc.co.uk/programmes/p047z13f