Nervous tension

It depends on the cli9mate and habit of people.In India people who live in the banks of large rivers take bath in the river on all the days without any adverse effects.In fact in places like Haridwar and Rishi kesh the ganges water is ice cold in summer and in winter it is freezing cold.yet people take bath in it.This is possible because the temparature out side is higher than that of the water .The same thing is not possible in cold countries.