1 685 square foot Group Exercise Studio The Main Post Fitness Center is the spiritual heart of the Presidio YMCA. Along with housing our administrative offices the Main Post also contains a 3 277 square foot state-of-the-art fitness floor offering numerous exercise machines from treadmills to cycling machines and everything in between. We also have an exceptional Childwatch program so that your children can play while you work out. One dance floor. Total 1685 Sq Feet Private Lessons Groups Classes Studio Parties and/or Practice Sessions. American Smooth & Rhythm Swing Salsa & Merengue zumba world dance. Group Class beginning Social Ballroom Fridays 7:00PM Practice 8:00PM M-F 6:00AM-10:00PM S-S 7:00AM-7:00PM Award winning Instructor