Dr. Chris & Xand demonstrate a great body trick you can do at home. They look at how the body is at healing itself.

The doctors find that your breath is as unique as your fingerprints.

The doctors use real stomach acid to do an experiment to show how your digestion works.

The doctors do an experiment to prove that we have invisible ink inside our bodies.

The doctors show how amazing the liver is and how it works. Dr. Chris collects snot from the public for an experiment.

The doctors look inside each other's ears and find out why we have ear wax.

Dr. Chris swallows a camera and Dr. Xand has data removed from his brain. At the hospital, there's a broken ankle and a

The doctors investigate the eye and Dr. Chris looks at his fat under a microscope. They meet a patient with a bad rash.

The doctors look at vomit and meet a vomiting robot. Dr. Xand delivers blood to a hospital for an emergency.

Dr. Chris uses a remote-control car powered by his own urine, and Dr. Xand gets his verruca treated.