Hydration is particularly important in hot weather due to increased sweating and the body's need to regulate temperature. When temperatures rise, the body loses fluids and electrolytes rapidly, which can lead to dehydration, heat exhaustion, or heat stroke if not adequately replenished. Staying hydrated helps maintain essential bodily functions, supports physical performance, and prevents fatigue. It's vital to increase fluid intake during hot conditions, including drinking water and consuming water-rich foods like fruits and vegetables, to stay healthy and energized.