These last only ten to thirty seconds, according to how quickly and how well you react. They are carried out with the upper part of your body well clothed, always in a warm room. This is also an excellent way of boosting immunity and protecting against minor illnesses - particularly throat and chest conditions - eliminating flatulence, constipation and stress.
Here's How
Fill the bath with enough cold water to reach to your waist. Climb into the bath and stay there for a few seconds, then get out, gently pat the excess water from your skin and immediately climb into a warm bed.