What best describes a sedentary lifestyle?

A sedentary lifestyle is characterized by little or no physical activity. This description emphasizes the lack of movement and exercise, which can have several health implications, including a higher risk for obesity, cardiovascular disease, and other chronic health issues. In contrast to active lifestyles that incorporate regular exercise, a sedentary lifestyle typically involves prolonged periods of sitting or inactivity, reflecting behaviors such as working at a desk job, watching television, or engaging in minimal physical movement throughout the day.

The other options describe levels of activity that are not consistent with a sedentary lifestyle. For instance, regular exercise denotes an active lifestyle, while a highly active lifestyle signifies frequent physical engagement. Lastly, a mixture of active and inactive periods suggests some level of activity, which again stands in contrast to the definitive lack of exercise found in a sedentary lifestyle.