The concept of a Reflexive Interaction is presented, which can be seen as a specific manifestation of Peripheral Interaction. In contrast, a Reflexive Interaction is envisioned to be executed at a secondary task without involving substantial cognitive effort, while enabling the user tiny interactions, shorter than Microinteractions, without straining the user’s main interaction channels occupied with the primary task. To underline the proposed concept, a series of research studies has been conducted that exploit the unique sensing and motor capabilities of the human body.