“Everything you do, affects everything else. And everything you left undone, affects you.” -- LW
You want to increase the circulation of Qi in an indoor space that you may be allowed to breathe and everything in the interior space also breathes. If the design of the house or building is well executed, air flow will reach every corner, flow through every room, and cleanse and invigorate every area of the interior space. On the other hand if there is poor design, few windows or no windows, then creating interior flow is crucial. The house breathes in air just as your lungs take in air to sustain life. Air and light are important elements in living healthy and happily.