If you look carefully at people who have gone through a certain level of emotional stress recently, you will notice small changes in their physical appearance. Often, if the left eye appears slightly smaller than the right, you can be quite certain that they have been going through some emotional distress in the past six months (unless, of course, they were born that way). This is because the left side of the body is always associated in yoga with the emotional life of the human being and the feminine dimension, symbolized by the moon with its cycles of waxing and waning.