When the cabin fever kicks in… This 1970 performance piece by Klaus Rinke is typical of the German artist’s poignant body art, which he began making in the early 1960s using what he termed “the gesture of the body as a dematerialized and most intelligible medium”. Much of his work—including this series of physical interactions with the corner of a stark room—centres on space, gravity and the passing of time, and their effects upon the human experience, which feels particularly pertinent at this moment in history.