Dr. John Gray uses ozonated water.

Negative Ion generators can generate Ozone, which can toast your lungs and burden the heart. State of the Art Instruments makes a water ozonator that vents ozone safely. Dr. John Gray (posting on Mars-Venus doc) emphasizes oxygenating with ozonated water, breathing, rebounding to clean the lymph, and his superfood shake: molasses, apple, 3-4 almonds, cracked chia seed, and whey powder (non-hydrogenated). Check out his book and the post above.

http://www.amazon.com/exec/obidos/ASIN/0312318642/