Dr Chris puts Dr Xand inside a giant water balloon to show how viruses attack our bodies, there's a final instalment of Ouchology, and Dr Chris discovers how the shape of your ears enables you to hear.
There's a tug of war in the lab as the doctors show the incredible strength of your ligaments. Spot the disappearing head in Mindbenders, and Dr Xand meets a dad and his son making bionic hands in their living room.
Dr Xand takes to the throne when Dr Chris sets him the impossible task of being Mini-Xand's pituitary gland. Things get competitive in Ouchology, and Dr Ronx meets dental patients to find out more about braces.
Dr Xand gets stuck to a wall in an experiment showing how your brain tells your muscles to move. Dr Ronx and Dr Chris are changing nappies in Ouch Baby.
Can you wobble your kneecaps? Find out why and what you need them for in this episode's lab. Meet three amazing Big Heart Ouch Award nominees, and find out who is Top Doc in Ouchology.
Dr Xand goes head-to-head with Dougie the dog in the lab to show how your shoulders work, catch up with our Ouch Babies in their first weeks of life, and meet triple jumper Naomi Ogbeta.
Dr Xand's been messing around with Dr Chris's greenhouse and prize-winning strawberries to show how your trachea works. The doctors get quizzed in Ouchology, and meet three incredible Ouch Awards nominees.
Find out why Dr Chris is giving Dr Xand a vaccination in the lab, it's time to meet our Ouch babies as they're born, and get some mindfulness tips in this episode's Mindboosters.
Dr Xand has created a thunder tube to show you how your vocal tract makes your voice loud, meet Brilliant Body Anoushe Husain as she takes Dr Ronx climbing, and find out who's the Top Doc in our Ouchology quiz.
There's a lizard in the lab, and it shares an amazing piece of body kit with you. Catch up with our Ouch Babies as each family goes for an ultrasound scan, and meet the body popping Brilliant Body.
Dr Xand invents a facial recognition system to keep Dr Chris out of the lab, there's a new quiz putting the doctors on the spot in Ouchology, and find out how to lift your mood in Mindboosters.
You only need one sperm and one egg to make a baby, but how do they get together?
How boys' and girls' bodies are different, how they develop and grow and how they start producing sperm and eggs.
A fertilised egg doesn't become a baby overnight, it takes nine months to become a brand new human being!
Want to know how to sort your life out? Packed with loads of life fixing know-how this show cracks the code of your daily dilemmas.
With his loyal Clover by his side, Theo listens to Sam who explains the secrets of 110m hurdles.
Accompanied by Malou, Theo discovers the swimming pool and the elegant rules of synchronised swimming.
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