Nadi are pathways through which prana or life force energy flows to different parts of our body and consciousness from the universe. The chakras are energy centers that draw in life force energy and these charkas are connected to a mesh of energy pathways called nadis which propagate the energy to various parts of the body mind and consciousness. There are more that 72000 nadi in our human system.
There exist three major nadis they are ida , pingla and sushumna. Ida and pingla corresponds to the two hemispheres of the brain .Pingla is the solar nadi corresponds to the right hand side of the body and the left hemisphere of the brain. Ida is the lunar nadi corresponds to the left hand side of the body and the right hemisphere of the brain.