Staying hydrated gives you more energy, improves your skin’s texture and color, and gives your body what it needs to function properly. Even mild dehydration can have cognitive effects on your mood, decrease your memory, and impact brain function. In fact, many people mistake symptoms of dehydration for symptoms of depression! If you are feeling lethargic, have difficulty concentrating, or have trouble remembering things, you may need to drink more water. When you get enough water, your body will feel healthier and happier.