Which of the following is NOT a good habit for extended sitting?

Thrusting your head forward while sitting is not a good habit for extended periods of sitting because it can lead to poor posture and strain on the neck and spine. This position increases the risk of developing musculoskeletal problems, such as neck and back pain. Maintaining proper alignment, such as keeping the head aligned with the spine, is essential for reducing physical stress during long sitting sessions.

Conversely, keeping your feet flat on the floor and using a chair with proper lumbar support are both practices that promote good posture and help maintain comfort, thereby reducing the likelihood of discomfort and injury associated with prolonged sitting. These practices enhance overall ergonomics and support healthy body mechanics.