The Gaia's Protocol is a guide that provides natural advice and information on using oxygen therapy to cure 21 chronic diseases. It works by helping oxygen enter the blood cells, which removes toxins from the body. The program contains step-by-step instructions for natural medicines and lifestyle changes that can make a person healthy and disease-free. The key component is using oxygen to enter blood and cells, which damages cells without enough oxygen. It has benefits like being safe and helping athletic performance, while drawbacks include only being available online.