I would like to point out that this is Dalek Caan leading the relaxation exercises. As the leader of the Cult of Skaro, it is Dalek Caan’s purpose is to think outside the rigid little Dalek box, finding new ways to exterminate life forms. If any Dalek ever were to learn to relax, it would be him, but that means you should trust him even less.
You. Have. Been. Warned.