Psychosomatics is concerned with mentalization and the mind's impact on the body's functions. Choosing the reverse approach, how the body steers the mind, the author elaborates on a monistic mind-body-theory, suggesting that all physiological processes down to the cellular level have a psychological concomitant. Body and mind are the two sides of one coin, distinguished though by different representational organizations. This perspective is pertinent to Freud's 1915 definition of the drive as the body's demand on the mind. It also opens interesting perspectives for the elaboration of a preservative drive and its specific ideation in mental life. Comparing the dynamics between the sexual and the preservative drives with the workings of the autonomous nervous system reveals some characteristic traits of the preservative drives, as they are considered characteristic for psychosomatic patients. As a case in point the author looks into the French conception of the drives and the theoretical framework of the Paris School of Psychosomatics, to which her conception would add an important dimension, theoretically, clinically, and technically.