A sedentary person
Not moving; relatively still; staying in the vicinity.
The oyster is a sedentary mollusk; the barnacles are sedentary crustaceans.
(of a human population) Living in a fixed geographical location; the opposite of nomadic.
(of a job, lifestyle, etc.) Not moving much; sitting around.
Inactive; motionless; sluggish; tranquil
Caused by long sitting.