The phrase "digestion system" refers to the group of organs and processes in our body that breaks down food into nutrients that can be used by the body for energy and growth.
In anaerobic digestion systems, the organic materials are put into sealed chambers. (purpod100.com)
One of the keys to optimal health is to have a good digestion system. (greenkitchenstories.com)
Turns out it's the perfect answer to my cool food cravings, my rapid digestion system, and my need for something quick and easy! (simplenaturalnutrition.com)