BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Thirst is normally just the brain’s way of warning that you’re dehydrated because you’re not drinking enough fluid. But excessive and persistent thirst (known as polydipsia) could be a sign of an underlying problem such as diabetes.

Detailed explanation-2: -(1) “Thirst” (the sensation of wanting to drink) and “dehydration” (the physiological fact of having lost fluids) are two related but distinct things. (2) It’s thirst, not dehydration, that causes impaired exercise performance.

Detailed explanation-3: -Dehydration. Ironically, becoming dehydrated in the first place could prevent you from feeling thirsty as dehydration progresses. The exact cause of this isn’t fully understood, but scientists believe that losing enough water to upset your body’s systems and signals could also be enough to interrupt the thirst reflex.