The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

Find out about the different stages of a human life cycle and ... What is the digestive system? Discover how the food gets into the body, through the digestive system. What happens to food in ...

The human body ... into energy to keep the body working. Foodstuffs are eaten; prepared in the mouth into a form suitable for digestion; broken down in the digestive system into smaller units ...

Your heart's will to beat, to keep going, is incredibly strong. If the heart fails, so does everything else… Because it's your heart's job to deliver to every cell, to every nook and cranny of ...

PBS Nova spoke with physiology experts and competitors to find out what happens to the human body during speed eating ...