There is an electromagnetic energy field that surrounds the body which includes the arc line, the radiant body, and the subtle body. When people refer to 'aura' they're talking about this energy field.
The aura is an energy field that surrounds you. It's somewhere between three feet and nine feet—that makes you human. Everyone has an aura of at least three feet, but on average they are usually around five to seven feet.
Wearing white clothes will add an extra 12 inches to your aura which is extremely helpful if you’re in a healthcare profession or you’re needing extra support on days where you aren’t feeling your best. This is why I often wear white as a spiritual teacher.
White is a combination of all of the colors of the chakras, this is why it expands the bodie’s field. When our electromagnetic field is expanded, we magnetize experiences to us that are more in alignment to our higher frequency.
Yogi Bhajan, who brought the technology of Kundalini yoga to the West said that if you are having a bad day, take a cold shower and put on white clothes from head to toe. Then, notice how you feel :)
Taking a shower is important because water is extremely good for the aura and nervous system as a whole since the hair is an extension of our nervous system. Any time you drink water or eliminate water from the body, it changes the emotions and anytime you physically getting into water, you cleanse the the aura.
But don’t take my word for it. Give it a try.