1. Ancient civilization period: Ancient civilizations, such as ancient Egypt, ancient Greece and Rome, all had the custom of bathing and cleaning. Ancient Egyptians often washed their bodies with perfume and sesame oil, while ancient Greeks and Romans built large public baths and private bathrooms.
2. Medieval period: In the Middle Ages, bathing was considered unnecessary and even harmful to health due to poor sanitary conditions. However, there are still some needs to clean the body in religious ceremonies and medical practice.
3. Modern society:/kloc-Since the 9th century, with the acceleration of urbanization and the improvement of sanitary conditions, bathing has become more common. The rise of public toilets and family toilets makes it easier for people to keep themselves clean. The development of modern science and technology has also brought more convenience to bathing, such as water heaters, shower equipment, detergents and so on.
In a word, the time when humans began to take a bath can be traced back to prehistoric times. With the development of civilization and the progress of science and technology, bathing has gradually become an indispensable part of daily life.