have many possible causes, including:
- poor sleep
- migraine
- stress
- caffeine withdrawal
- high blood pressure
- illness
Persistent or severe headaches should not automatically be blamed on dehydration.
7. It Can Help Replace Fluids Lost Overnight
People who sleep in hot environments, sweat heavily, or breathe through the mouth may wake up feeling particularly dry.
Morning water can help with symptoms such as:
- dry mouth
- thirst
- sticky saliva
- mild dizziness
Again, the main benefit is rehydration—not detoxification.
8. It Does Not “Clean Toxins” Out of the Body
One of the most common