YMCA of San Francisco is a health and human services organization, serving the community through several wellness and social programs. Based in San Francisco, Calif., the organization offers several programs to encourage people to act on character-development principles. It also provides programs to build self-esteem, strengthen positive values and establish healthy behaviors. Additionally, the organization conducts several group exercise classes and aquatic programs on mobility/flexibility, social events and volunteer activities. YMCA of San Francisco also provides child care and babysitting services to members.