The Third Eye Chakra.

The third eye is located slightly above and between the eyebrows, its colour is Indigo and its main function is seat of wisdom and the centre of inner vision.
When energy is flowing freely you will experience spontaneous spiritual awakening, trance state, profound insights, knowledge of past lives, understanding and no fear of death, meaning and clarity in your life, healing abilities of self and others, increased balance of left and right hemispheres, contentment, inner mastery, knowledge of nature, ecstasy arising from sexual energy ( this can be achieved via sex or celibacy).

Lack of energy can make you feel, grief, mental slavery, staying imprisoned by lower energies, dogmatism, abuse of higher powers you have gained, scepticism and being dismissive of your own spiritual experiences.

These will affect your health with S.A.D.( seasonal affective disorder ),skin cancer ( over exposure to sunlight ) and headaches and migraine.