adjective
sedentary
SED-un-tair-ee/ˈsednteri/
Spending much time sitting or staying in one place with little physical activity.
Her sedentary desk job keeps her seated for most of the day.

Etymology
Built on “to sit,” sedentary first described remaining in one place. Applied to occupations and people, prolonged sitting supplied the bridge to the broader sense of physical inactivity.
In context
Because unfortunately, this is the life we're living in. We are becoming more sedentary in our day-to-day lives. We're sitting more.
More examples
- Daily walks help balance his otherwise sedentary lifestyle.
- She becomes less sedentary when she takes regular movement breaks.
- We mix sedentary activities like reading with outdoor games.
Forms
sedentary
Similar words
- inactive
- Describes little activity generally, not specifically prolonged sitting.
- deskbound
- Specifically describes being kept at a desk, usually by work.