The Sustainable Gym is producing its own energy. The urban garden on the roof which is supporting land for Field Sharing is also producing its own oxygen and fruits, the building material CLT which is made out of wood is also producing oxygen during production and it is a good material for insulation. Also with the extra insulation the house is saving energy for heating so especially while its winter you are helping the environment. With the underground waste disposal system there is no need for all those garbage collector trucks if you apply the system for the whole city.
The underground car park, which is providing private and public parking space, is saving space in the city so you can build more buildings in a city so there can more people live at the same place.