I have been currently doing cold baths for the last week or so. Amazing in effect and makes me more "palaeo", I guess. In Vienna, apparently, the water from the tap comes out at a temperature of 8-10 degrees Celsius as it comes straight from the mountains without being warmed by the sun. So, I won't need to add any ice-packs to my baths. I spend the time reading as the idea is to be in the cold bath for at least an hour a day, overall.