If you are thirsty, dehydration has already begun.
True
False

I am not sure on this because I can go atleast 4 hours after feeling thirsty without getting dehydrated (I get headaches when I feel dehydrated)

Respuesta :

It's true. It says that the process of dehydration has begun but hasn't risen to the peak where you can feel it yet, however, dehydration has started taking place inside the body.