Sedentary means:
* Characterized by or requiring a lot of sitting - This is often used to describe a lifestyle or a job that involves a lot of sitting. For example, "a sedentary office job".
* Relating to or characterized by sitting or a sedentary way of life - This is used to describe things or activities associated with sitting, such as "sedentary habits".
If you meant to say "sedentary", then it means a lifestyle with a lot of sitting and limited physical activity.