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While some foods make the digestive process difficult, some foods can ease your digestion. They have stomach-soothing properties along with vitamin supplements that offer digestive benefits. Therefore, you need to choose foods carefully should you not desire to slow gastrointestinal tract function. Following are 6 foods which can be beneficial to digestion. Let's take a look at now. Specific phobia (also known as a simple phobia) Today's building codes state spaces using furnaces have to have opportinity for creating combustion air because it used. Newer homes have ducting installed, during construction, which brings outdoors externally with an area nearby the furnace. This ducting, usually called make-up air duct, or combustion make-up air, is sized in accordance with the capacity from the furnace.