What is Digestion? Digestion is the breaking down of food into nutrients that our bodies can use. Our body uses food as fuel to provide energy for work, play and growth. Your digestive system is responsible for converting the food we eat into energy and absorbing the nutrients that our bodies need to stay alive. You are about to begin a Video Voyage through the Digestive System. Please follow ALL directions along the way so you will have a SAFE trip or otherwise you may end up in the toilet. Please look at the diagram on the right. All of the parts you see labeled will be investigated during our Digestive System Video Voyage. After you have looked at the diagram click on NEXT below.