Achieving symmetry in life is a goal worth working towards. In life all things must have some sort of balance. Technically symmetry patters help us organize out little individual worlds conceptually. For the even more technically discerning individual, symmetry is best explained as an occurrence in nature and the inversions by artists, craftspeople musicians, choreographers, and mathematicians.
For the individual however this is more than just striking a balance. Going by the general rule that in all things there is an action and a reaction would be a simpler way to explain this rather too simply implied term. Being able to react or cause a certain reaction is in some way exercising some control over the outcome of any given situation.
If an individual wishes to engage in a scenario where upon the outcome is beneficial to all, then the relevant body language needs to be focused and specifically tuned towards the said outcome. The response to the practiced and planned different body language should have the intention of achieving some level of symmetry in its delivery.
Sometimes or perhaps most times the symmetry of any situation needs to be readjusted in order to gain the reflection intended or desired.
If the desired symmetrical reaction needed and desired is meant to be positive, then the corresponding body language should be done in a way that engages the same positive reflective results.
Sending out the body signals that personify the positive aura will almost always be able to achieve the positive outcome that is symmetrical in nature. The same would apply to the oppositely generated body language.
Technically the symmetrical system can be broken up into a few distinct parts which are rotation symmetry, reflection symmetry, translation symmetry and glide reflection symmetry. All of these can be inter related and reflected in the various corresponding body language.