You will notice that emotions also permeate the air around you. This is how people can tell what mood you are in before they even speak to you. You have surely had the experience of walking into a room and suddenly feeling yourself become very tired and depressed simply because the person in the room is feeling that. You have also had the experience of walking into a room and suddenly feeling inspired and happy because the person in the room is feeling that. This is because emotions have vibrational affects on the air. It appears as if, although not proven at this time, emotions actually have molecular structures that reach out into the air, or perhaps they might change the molecular signature of some of the molecules in the air around a person. It is not quite certain how this works, but perhaps science will explore this at some point. It is quite effective in meditation to imagine that you are able to affect the molecules in the air around you through emotional patterning. This can produce profound results.