Question

why do we feel thirsty

Answer 1

The amount of water that we lose must be replaced to make the water in our body constant. This loss of water is registered in the brain and sends signals to our mouth and throat. This is the time that we feel thirsty. Many people believed that dryness in the mouth or throat is what causes thirst.

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Answer 2

To fight dehydration on a hot summer day, you instinctively crave the relief provided by a tall glass of water. But how does your brain sense the need for water, generate the sensation of thirst, and then ultimately turn that signal into a behavioral trigger that leads you to drink water