Hidden Signs of Dehydration That Aren't Just Thirst

47. A Change in the Color of Your Tongue

Your tongue is an excellent indicator of your hydration status. When you are well-hydrated, your tongue should be a healthy pink and have a normal, moist appearance. However, when you're dehydrated, your tongue can become dry and have a white or yellowish coating. This is due to a lack of saliva and a buildup of bacteria. It is a clear and simple visual cue that your body needs water. If you notice a change in the color or texture of your tongue, it is a good time to reach for a glass of water.

48. Unexplained Chills or Cold Sweats

While most people associate dehydration with overheating, it can paradoxically cause unexplained chills or cold sweats. When your body is low on fluids, it struggles to maintain a stable internal temperature. This can disrupt your body’s thermoregulation, causing it to overreact and send signals that create the sensation of being cold, even when it's not. If you find yourself shivering or getting cold sweats out of nowhere, it’s a subtle sign that your body's temperature control system is out of whack and needs water to function properly.