Presenter Dr Christian Jessen, takes a lesson teaching teenagers about their own embarrassing health concerns.
Dr Christian heads for a GCSE class at Lilian Baylis Technology school, in south London.
Under the watchful eye of teacher Leoni Martin, Christian has an open and frank exchange with pupils about body image and bodily functions.
Later he dispels some popular myths about acne, testosterone and chewing gum.
He also offers some excellent advice for teachers on how to deal with embarrassing topics and illustrates how to successfully convey important health information to teenage students.
