It takes guts: how your body turns food into fuel (and poop)

Introduction : the wonderful world of guts

Where it all begins : the mouth

The food tube : your esophagus

Enzymes and acid and mucus, oh my! : inside the stomach

When what should go down comes up again : the science of barfs and burps

Destination digestion : the not-so-small intestine (and friends)

Meet your microbiome : the trillions of tiny tenants helping you poop

Peristalsis and poop : the large intestine

The end : really.