Shapes

Shapes is a fitness center opened by Marge for regular women.

Orgin
When Marge found out she was gaining weight she went to the LA Fitness Center which was to complicated for her. Appearantly she saw an out of business Android's Dungeon and turned into Shapes a fitness for regular women.

Locations
The first is where the Android's Dungeon used to be the other is where Krusty Burger was once.