Operation Ouch! Doctors answer YOUR questions
If you love learning all about our bodies' weird and wonderful ways, then the chances are you probably love Operation Ouch!
A brand new series is out now on BBC iPlayer and as always it's full of fun and plenty of gross alerts.
We were lucky enough to be joined by Dr Chris, Dr Xand and Dr Ronx in the Newsround studio.
Ricky asked them all about the new series and got them to answer some of your burning questions.