A significant portion of South Koreans prefer showering or bathing right before bed rather than in the morning, aligning with widespread cultural hygiene habits. This evening routine stems from the desire to wash away the dust, pollution, and sweat accumulated in dense urban environments throughout the day before getting into clean sheets. Furthermore, taking a warm shower or bath in the evening helps relax muscles, reduces physical fatigue, and ensures a comfortable, refreshing start to the following morning without requiring a lengthy rush before heading out.