Public baths originated from a communal need for cleanliness. The term public may confuse some people, as some types of public baths are restricted depending on membership, gender, religious affiliation, or other reasons. As societies have changed, public baths have been replaced as private bathing facilities became more commonly available. Public baths have also become incorporated into the social system as meeting places. As the title suggests public bathing does not refer only to bathing. In ancient times public bathing included saunas, massages and relaxation therapies. Members of the society considered it as a place to meet and socialize. Public bathing could be compared to the spa of modern times.