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There’s a big bang in the lab as the doctors show how genes make you who you are.

The doctors balance a whole room’s worth of furniture on four leg bones

Are you squeamish? Find out why in today’s lab experiment.

Dr Xand goes underwater to show how your blood clots, and Dr Ronx looks at echolocation.

Dr Chris and Dr Xand explore the what makes your poo brown in a new lab experiment.

The doctors reveal the bones in your nose that help you breathe clearly.

Find out how amazing your hands are when the doctors go head to head in a thumb challenge.

Dr Xand invents a game show to put Dr Chris’s reactions and reflexes to the test.

Dr Chris and Dr Xand reveal how salt is the magic ingredient that enables you to sweat.

Dr Chris and Dr Xand are in the lab to show the barrier that keeps your brain safe.

The doctors reveal the part of your body that keeps you balanced – your vestibular system.

Dr Chris and Dr Xand reveal how your brain controls your body in a lab experiment.

Join the doctors for a journey around the human body as they look at their favourite bits.