Every human being as an aura, or a bio magnetic field. What we see with our physical eyes is the external body, but the energy body is perceived from within and can also be seen externally with a heightened degree of intuition.
Our energy field accumulates a lot of things as we go through our day. From public transport, from interactions with others, and even media.
And aside from this, our energy field is what stores all of our subconscious trauma, repressed emotions and past life memories. Disease which manifests in the physical body is just a symptom of energetic imbalance or blockage somewhere in the subtle body - because the gross manifests as a result of the subtle.
You may notice that being around some types of people or environments instantly uplift your energy, whilst some types of people may continuously drag you down or keep you in a lower energetic vibration.
If you are a sensitive person and absorb energy easily, it becomes EVEN more important to cleanse your own energy field - especially if you feel off.
Here are a few effective and quick ways to cleanse your aura!
Cleanse your aura with white sage / similar incense
Of all the incense available, white sage is easily one of the strongest for purifying the energetic field, in a space, in your own field and also for cleansing your crystals. Many crystals absorb negative energy and so need to be cleansed regularly. Back obsidian for example needs regular cleansing. Camphor likewise is always used in Hindu rituals to purify a space, so is Gau dhoop or incense made from the dung of pure indigenous desi cows (Gaumata, whom we worship as mother).
Simply burn the sage and first offer it to Great Spirit in the sky or Dhanvanthri / Vishnu the God of plant medicines. Then waft the smoke of the sage with a fan across your whole aura, in sweeping motions from the top to the bottom. All of these plants have a spirit, they have a consciousness and everything works with your intention so you can first communicate to the sage (or Great Spirit), to purify a certain part of your aura etc and it will work accordingly, for example to cleanse your heart chakra if you feel it is heavy, and release any dense or stagnant energy.
Wash yourself in salt water
Salt water is one of the most effective ways to purify your field, as salt absorbs negative energy. You can either just put your feet in salt water at the end of the day or soak your whole body in salt water (if you have a bathtub). Keep your feet in salt water for at least five minutes and then throw the water into the grass. If you feel particularly dense, do this continuously for a few days until you feel lighter. Epsom salts are one form of bath salts that are known specifically for relieving physical pain. Himalayan pink salt is another highly purifying form of salt but always check for sustainable source.
Visualise your aura being washed with a white light
Visualise a pure divine white light entering like a column from the top of your head and filling your whole body, imagine yourself sitting in an orb of divine white light and ask that this white light dissolve any sort of energetic density and restore your field to wholeness. Hold this white light for a few seconds and ask Mother Earth to absorb any negative energy that you have accumulated and transmute it into love.
Make use of Gangajal (water from river Ganga)
Gangajal is ultimate purifier. If you feel like you have too much density in your aura, simply take some pure Gangajal and put it over your head three times with your right hand. Of course, if you can take a bath in the Ganga this is one of the most highly purifying things for not just your aura but this cleanses your karma from lifetimes. There is a reason that Hindu rishis all detailed this out in the Vedas and to take Ganga bath on specific days as well for deeper purification.
Keep a black tourmaline, selenite or black obsidian on your field
If you feel like your field is too vulnerable or sensitive, simply keep a black protective stone like black tourmaline or black obsidian on your field. Many people wear this as a pendant for example. Selenite is one which crystal which does not need to cleansed however the other two DO need to cleansed. Selenite is white in colour and is one of the most high vibrational crystals and often used to cleanse other crystals. Make sure that you charge and cleanse your crystals before wearing them, as it is your energy which will determine how to crystal energy interacts with you.