“The spinal cord is like an upturned tree, with man’s hair as its roots, and afferent and efferent nerves as branches....Like an upturned plant, man similarly absorbs through his hair electric currents helpful to the body.” -Paramahansa Yogananda
Have you ever noticed that when people go through major life changes they change their hair? Cutting hair after a break up is a subconscious attempt to get rid of the stored energy from the relationship.
Your hair is a ritual, and how you treat it is deeply significant as a reflection of the relationship to Self. It is no coincidence that men with beards and facial hair exude more masculinity, not just because of the aesthetic but from a deeper resonance with his intuitive nature and self.
Head coverings in almost all religions is an adaptation of the occult knowledge of preserving and protecting ones energy through the portal of the head and hair.