A sedentary lifestyle is a type of lifestyle involving little or no physical activity, as opposed to an active lifestyle. A person living a sedentary lifestyle is often sitting or lying down while engaged in an activity like socializing, watching television, playing video games, reading or using a mobile phone/computer for much of the day. A sedentary lifestyle can potentially contribute to ill health and many preventable causes of death.
Screen time is a term for the amount of time a person spends looking at a screen such as a television, computer monitor, or mobile device. Excessive screen time is linked to negative health consequences.
Sitting time is a common measure of a sedentary lifestyle. A global review representing 47% of the global adult population found that the average person sits down for 4.7 hours per day, though the real value is likely to be approximately two hours more than this self-reported value.