Businesses generally explain that this is a reaction to the burning of fat, for which some people really believe, it is incredible.
Fat burning, in fact, is just a more graphic metaphor, seductive gimmick, I even more inclined to think that this is just a marketing concept, because I really can't imagine, how the fat in the human body "burning".
Normally, if you feel thirsty, it's a sign that your body is seriously dehydrated. You can't wait until you're thirsty to drink water.
Additionally from the perspective of Chinese medicine: "Saliva is the fluid of the kidney", and has been made into a Jin Jin Yu liquid, is a great tonic for the human body of the heavenly river water. Kidney function is normal, saliva is very rich, dry mouth and tongue is the heart and kidneys do not communicate, kidney water is not on, dry fluid and true qi consumption performance.
Clinically, diabetic patients, hyperthyroidism patients generally have the phenomenon of dry mouth, serious dry mouth phenomenon can also lead to damage to the renal tubules, resulting in cardiac arrhythmia and other dangerous consequences.