One source which can let us know the balance of Agni Soma in our body is our Nadi or Nerve. It helps us understand the degree of heat and cold in the body. This Nadi is the internal thermometer of our body. If there is high degree of heat inside the body, we are fed with medicines with high quantity of Soma to fill the gap in quantity of Soma. Similarly if the body is suffering with high degree of cold, then the treatment advisable is of medicines with high quantity of Agni. This same principle is applicable on Wak Shakti, because of which the speaker needs water to pacify the heat.