May I ask following questions?
- Why do we meditate in a closed room? With many people in the room, there is more carbon dioxide. As a result, the air is not good. There is not enough oxygen.
- Does keeping the room closed have something to do with the energy? Can the energy be maintained by keeping the room closed? Or there are other reasons?
It is best to meditate indoors. The stillness in the room holds and reinforces the space. Even when there is no wind, the space outdoors is not contained and thereby is not reinforced outdoors. If it is not practical to meditate in a closed room, you do your best – open some windows.