The fitness facilities on the Carnegie Mellon University campus are hidden inside of the upper level of the UC Cohon building. When intending to use the fitness facilities, there is no ability of patrons to detect whether or not those facilities are overcrowded at the moment. Considering that the weight room and the cardio rooms are extremely small with limited windows, one must travel across campus, through hallways, and up staircases to the front door of the fitness rooms to detect when it is too busy to enter. This is a long journey just to find out one needs to come back at a later time or date.  There is also no parking lot, large windows, or other visual indicators that people normally use to see how busy a location is indoors.  We wanted to solve this problem with reactive architecture and create an indicator of how busy the gym was to people who were far enough away from the gym to plan their access of it.