Nerve impulses that travel the nervous system (Mercury) and the fine intricate web of etheric energy known as Chi are ruled and influenced by Uranus. Chi is intimately connected to the breath, another Uranus principle which acts through the Mercury ruled Lungs. Uranus can create erratic organ functioning.
Uranus also symbolises awakening which can only occur in the moment. You cannot awaken consciousness with astrology or kabbalah, they can only help us on our path to awakening. You can only awaken consciousness by actively using consciousness. The breath is used to establish a centre of gravity in our consciousness that enables the realisation of something other than the perpetual ‘I’ and hence the breath and its organ of expression, the lungs, and its channel of transmission, the nervous system, are all related to Uranus and Aquarius.