How does meditation clean my aura?

Name: Ishita. DOB: 4 April 1995. POB: Bangalore, India. TOB: 6:40 AM.

I’m trying to understand how meditation actually helps in cleansing my aura. When I sit down to meditate, sometimes I feel warmth or tingling, but I’m not sure what’s really happening on an energetic level. Does meditation truly purify the aura, or is it more about calming the mind and emotions which then reflect in the aura?