During heatwaves, dehydration poses a significant health risk, leading to conditions like heat exhaustion and heatstroke. Recognizing the early warning signs is essential for prevention. Common symptoms include dark-colored urine, which indicates concentrated waste due to insufficient hydration, and excessive thirst paired with a dry mouth. Individuals may also experience dizziness, which occurs when fluid loss reduces blood volume, limiting blood flow to the brain. Persistent headaches can develop as dehydration affects blood flow and oxygen to the brain. Additionally, muscle cramps may arise from electrolyte loss during excessive sweating. Other signs include reduced urination, indicating that the body is conserving water, and dry, non-elastic skin, which fails to bounce back when pinched. A rapid heartbeat and breathing can occur as the heart works harder to maintain blood pressure. In severe cases, dehydration may lead to confusion or altered behavior, especially in vulnerable populations such as the elderly and children. Recognizing these symptoms early and ensuring adequate hydration can prevent serious health complications.