Final answer:
Non-exercise activities are sedentary activities that do not contribute significantly to physical fitness or good health.
Step-by-step explanation:
A non-exercise activity refers to any bodily activity that does not involve intentional physical exertion or structured exercise. Examples of non-exercise activities include watching television, playing video games, or leisurely scrolling through social media. These activities are more sedentary and do not contribute significantly to physical fitness or good health.