Does It Really Take Seven Years to Digest Swallowed Gum?

Audisee® eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! It takes seven years to digest swallowed gum. A penny placed on a train track can cause a train to derail. The average human consumes four spiders per year while sleeping. You may have heard some of these common sayings or beliefs before. But are they really true? Can they be prov...