We have no screen time in our home (it started out as restricted screen time due to sleep issues for DS and we decided to remove screen time completely). Which means that there is no screen time for adults as well. We do watch the occasional big sporting event on TV, but don't miss the screens too much. We also enroll our child in a lot of organized sports which involve strict schedules as well as head out to bike or hike on the weekends as a family. All of this ensures that there is not much of a couch potato syndrome going on.
Removing screens altogether is rather extreme for many people, but, it can be adopted in a moderate way - remove screen time on days with more homework or tests or remove screen time on 2 days of a week etc. In our case, we are a lot more productive and have more down time because of lack of screen time.