The aim of the study was to explore the meaning of smoking behaviour by applying the philosophy of Merleau-Ponty. Behaviour is a result of body-mind reacting on its world and is always intentional. The meaning of smoking behaviour is discussed in relation to body and space, formation of body image and identity, and learning of a habit. A habit is entrenched at the bodily level and in order to change the habit, the person has to re-identify herself at the bodily level as well as at the cognitive and emotional levels. It is suggested that the philosophy of Merleau-Ponty could be used in practice and research to improve smoking prevention and cessation strategies.