On the day Emilia Kühne learned from the German Pension Insurance (DRV) that she could now return to work full-time, she lay in her bed in a darkened room. For the 39-year-old, it was another day in which she only had the strength for five minutes, just enough to sit up in a wheelchair and eat something. She spent the rest of the time lying down, shielded as best as possible from external stimuli.