This article explores through the lens of Type 1 Diabetes what a body in fluctuation feels, and what kind of ecosystem has to be recreated to be able to survive, an ecosystem made of sensations, senses, sensors and more. It investigates the complexity of relying on sensations that appear or disappear, on other beings that have their own agendas, or on machines that could help or kill. It describes the fear of feeling estranged from one’s ‘extended body’ when it functions (...) alone, it tracks the experience of low blood sugar through the memory of the body or the instruments left in its surroundings. It is a story about the fiction of bodily integrity, of the combat between life and death, and of the impossibility of controlling the texture of life. (shrink)