Smudging is an ancient and sacred practice that has been used for centuries by many different cultures. Smudging is performed to remove negative energy as well as for centering and energy healing. It is best to use organic and/or sustainable sage. Metaphysical practices are about the awareness of energy within and around us. If you are on a path of spiritual awareness smudging your space is an ideal place to start. Ideal Times to Smudge When you move into a new living space.