Constant Thirst Feeling unusually thirsty throughout the day can be an early sign that your body needs more fluids.
Dark Yellow Urine Urine that looks darker than usual may indicate that you need to drink more water.
Dry Mouth & Lips A dry mouth, sticky feeling or unusually dry lips can occur when your body lacks enough fluids.
Feeling Tired Mild dehydration can sometimes leave you feeling tired, sluggish or less energetic.
Headache A headache can sometimes be linked to dehydration, especially when you haven't had enough fluids.
Dizziness Feeling light-headed or dizzy may occur with dehydration. If it is severe or persistent, seek medical advice.