GI track is the channel from mouth to bottom. So from your esophagus, stomach, duodenum, small intestine, appendix, large intestine to exit.
It is super important for your digestion but also for the health of your brain (your colon is your second brain). For instance if you have frequent constipation between 20-40 years of age, there seems to be a link to developping Alzheimer or dementia at a later stage in life. Your large intestine reabsorbs part of the fluids out of your faeces, but it your faeces does not move, the toxins get reabsorbed back into your system.
This program optimizes and harmonizes the bio-energetic field of your GI trajectory.