Facts About the Digestive System

  Each person makes between 1 and 3 pints of saliva per day. 

  If unraveled, your entire digestive tract is about 30 feet long. 

  Even if you were eating while standing on your head, the food would
   still end up in your stomach because of the muscles that push food
   down your esophagus. 

  About 1,000,000,000,000,000 bacteria are found in your
   gastrointestinal tract. 

  An average person will eat around 50 tons of food in their lifetime.