Sexual inactivity is the state characterized by the absence or significantly low frequency of sexual activity, encompassing both partnered and solitary forms, over a specified duration. As an academic research concept, it investigates the prevalence, antecedents (such as health conditions, relational dynamics, or personal factors), correlates, and consequences of this state, including its observed associations with physiological health outcomes, psychological well-being, and interpersonal relationships, rendering it a significant variable in studies across public health, psychology, and sociology.