A method of adapting content responsive to a well-being of a user wearing a head mountable display (HMD) comprises the steps of detecting, by one or more sensors, one or more parameters indicating one or more current properties of the user wearing the HMD, generating information indicating the well-being of the user based on the one or more parameters, and adapting an output of the HMD responsive to the generated information, the output comprising at least one of an image and an audio signal.