BBC Three meets people in relationships who ‘play' different ages to create sexual scenarios built around dominance and submission. Our experts give their view.

BBC Three meets people into ‘breath play', a potentially lethal sexual practice involving the restriction of oxygen to the brain. Why do they do it? What do our experts think?

BBC Three meets David, who has been practising chastity for over 100 days. Today he is being unlocked. He explains why he has chosen chastity, and our experts give their view.