Water is essential for life — every cell in your body depends on it. Staying hydrated helps regulate temperature, supports digestion, cushions joints, and keeps your brain sharp. Yet many people go through the day without drinking enough. Signs of dehydration include fatigue, headaches, dry skin, and trouble concentrating. Aim for about 8 glasses a day, more if you’re active or it’s hot outside. Carrying a water bottle can help you remember to sip throughout the day. If plain water feels boring, try adding slices of lemon, cucumber, or mint for flavor. Herbal teas and water-rich fruits like watermelon and oranges also count toward your intake. Staying hydrated isn’t just about avoiding thirst — it’s about helping your body perform at its best.