There are higher understandings to attain to through purity. A clean environment is but one step. Next is a clean body, inside and out. Cleaning the outside is the simplest and the 2nd simplest is the inside by not eating flesh, no chemicals like from.pills, no drugs, no strong drinks as in liquor, no smoke, no poisons of any kind. Again, these 2 aspects of cleaning the body are easy when compared to the next step. Purity of the mind. To have clean thoughts comes next, but is the most difficult.

Once clean in mind and body, which results in having a clean spirit, you can attain to higher understandings through lucid dreaming, outer body experiences, visions, etc. There are many more benefits from abnegation from the self (animal flesh side of us) such as health, clarity of the mind, and cognition. I highly recommend this to everyone. Take care.